Pay off more technical debt

This makes breaking changes to add underscores to many non-standard
function names provided by the c library. MODE=tiny is now tinier and
we now use smaller locks that are better for tiny apps in this mode.
Some headers have been renamed to be in the same folder as the build
package, so it'll be easier to know which build dependency is needed.
Certain old misguided interfaces have been removed. Intel intrinsics
headers are now listed in libc/isystem (but not in the amalgamation)
to help further improve open source compatibility. Header complexity
has also been reduced. Lastly, more shell scripts are now available.

Compared to 6f7d0cb1c3, some tiny corrections were made in libc/intrin/g_fds.c and libc/zipos/open.c including double semi colons and incorrect indentation for existing vista changes that were manually pulled from this commit previously.

third_party/python/Modules/_decimal/libmpdec/transpose.c

@@ -28,7 +28,7 @@
 │ EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.                           │
 ╚─────────────────────────────────────────────────────────────────────────────*/
 #include "libc/mem/mem.h"
-#include "libc/runtime/gc.internal.h"
+#include "libc/mem/gc.internal.h"
 #include "third_party/python/Modules/_decimal/libmpdec/bits.h"
 #include "third_party/python/Modules/_decimal/libmpdec/constants.h"
 #include "third_party/python/Modules/_decimal/libmpdec/mpdecimal.h"

third_party/python/Modules/getpath.c

@@ -11,7 +11,7 @@
 #include "libc/log/log.h"
 #include "libc/mem/alloca.h"
 #include "libc/mem/mem.h"
-#include "libc/runtime/gc.internal.h"
+#include "libc/mem/gc.internal.h"
 #include "libc/runtime/runtime.h"
 #include "libc/str/str.h"
 #include "libc/sysv/consts/auxv.h"

third_party/python/Modules/posixmodule.c

@@ -11,6 +11,7 @@
 #include "libc/calls/makedev.h"
 #include "libc/calls/struct/dirent.h"
 #include "libc/calls/struct/iovec.h"
+#include "libc/calls/struct/rusage.h"
 #include "libc/calls/struct/sched_param.h"
 #include "libc/calls/struct/stat.macros.h"
 #include "libc/calls/struct/statvfs.h"
@@ -25,9 +26,9 @@
 #include "libc/calls/weirdtypes.h"
 #include "libc/dce.h"
 #include "libc/errno.h"
-#include "libc/intrin/weaken.h"
 #include "libc/log/log.h"
 #include "libc/mem/alg.h"
+#include "libc/mem/gc.internal.h"
 #include "libc/nt/createfile.h"
 #include "libc/nt/dll.h"
 #include "libc/nt/enum/creationdisposition.h"
@@ -36,7 +37,6 @@
 #include "libc/nt/files.h"
 #include "libc/nt/runtime.h"
 #include "libc/runtime/dlfcn.h"
-#include "libc/runtime/gc.internal.h"
 #include "libc/runtime/pathconf.h"
 #include "libc/runtime/sysconf.h"
 #include "libc/sock/sendfile.internal.h"

third_party/python/Modules/selectmodule.c

@@ -9,7 +9,7 @@
 #include "libc/errno.h"
 #include "libc/mem/mem.h"
 #include "libc/nt/efi.h"
-#include "libc/runtime/gc.internal.h"
+#include "libc/mem/gc.internal.h"
 #include "libc/sock/epoll.h"
 #include "libc/sock/select.h"
 #include "libc/sock/sock.h"

third_party/python/Modules/tlsmodule.c

@@ -20,7 +20,7 @@
 #include "libc/calls/calls.h"
 #include "libc/errno.h"
 #include "libc/macros.internal.h"
-#include "libc/runtime/gc.internal.h"
+#include "libc/mem/gc.internal.h"
 #include "libc/str/str.h"
 #include "net/https/https.h"
 #include "third_party/mbedtls/ctr_drbg.h"

third_party/python/Modules/unicodedata.c

@@ -5,8 +5,8 @@
 │ https://docs.python.org/3/license.html                                       │
 ╚─────────────────────────────────────────────────────────────────────────────*/
 #define PY_SSIZE_T_CLEAN
-#include "libc/intrin/bits.h"
 #include "libc/fmt/fmt.h"
+#include "libc/intrin/bits.h"
 #include "libc/nexgen32e/kompressor.h"
 #include "third_party/python/Include/floatobject.h"
 #include "third_party/python/Include/import.h"
@@ -405,7 +405,7 @@ unicodedata_UCD_decomposition_impl(PyObject *self, int chr)
 
     /* high byte is number of hex bytes (usually one or two), low byte
        is prefix code (from*/
-    count = bextra(_PyUnicode_Decomp, index, _PyUnicode_DecompBits) >> 8;
+    count = _bextra(_PyUnicode_Decomp, index, _PyUnicode_DecompBits) >> 8;
 
     /* XXX: could allocate the PyString up front instead
        (strlen(prefix) + 5 * count + 1 bytes) */
@@ -413,7 +413,7 @@ unicodedata_UCD_decomposition_impl(PyObject *self, int chr)
     /* Based on how index is calculated above and _PyUnicode_Decomp is
        generated from Tools/unicode/makeunicodedata.py, it should not be
        possible to overflow _PyUnicode_DecompPrefix. */
-    prefix_index = bextra(_PyUnicode_Decomp, index, _PyUnicode_DecompBits) & 255;
+    prefix_index = _bextra(_PyUnicode_Decomp, index, _PyUnicode_DecompBits) & 255;
     assert(prefix_index < Py_ARRAY_LENGTH(_PyUnicode_DecompPrefix));
 
     /* copy prefix */
@@ -425,8 +425,8 @@ unicodedata_UCD_decomposition_impl(PyObject *self, int chr)
             decomp[i++] = ' ';
         assert(i < sizeof(decomp));
         PyOS_snprintf(decomp + i, sizeof(decomp) - i, "%04X",
-                      bextra(_PyUnicode_Decomp, ++index,
-                             _PyUnicode_DecompBits));
+                      _bextra(_PyUnicode_Decomp, ++index,
+                              _PyUnicode_DecompBits));
         i += strlen(decomp + i);
     }
     return PyUnicode_FromStringAndSize(decomp, i);

third_party/python/Modules/unicodedata_getcode.c

@@ -4,8 +4,8 @@
 │ Python 3                                                                     │
 │ https://docs.python.org/3/license.html                                       │
 ╚─────────────────────────────────────────────────────────────────────────────*/
-#include "libc/intrin/bits.h"
 #include "libc/fmt/fmt.h"
+#include "libc/intrin/bits.h"
 #include "third_party/python/Include/pyctype.h"
 #include "third_party/python/Include/pyerrors.h"
 #include "third_party/python/Include/pymacro.h"
@@ -174,7 +174,7 @@ _PyUnicode_GetCode(PyObject *self, const char *name, int namelen, Py_UCS4 *code,
        details */
     h = (unsigned int)_gethash(name, namelen, _PyUnicode_CodeMagic);
     i = ~h & mask;
-    v = bextra(_PyUnicode_CodeHash, i, _PyUnicode_CodeHashBits);
+    v = _bextra(_PyUnicode_CodeHash, i, _PyUnicode_CodeHashBits);
     if (!v)
         return 0;
     if (_cmpname(self, v, name, namelen))
@@ -184,7 +184,7 @@ _PyUnicode_GetCode(PyObject *self, const char *name, int namelen, Py_UCS4 *code,
         incr = mask;
     for (;;) {
         i = (i + incr) & mask;
-        v = bextra(_PyUnicode_CodeHash, i, _PyUnicode_CodeHashBits);
+        v = _bextra(_PyUnicode_CodeHash, i, _PyUnicode_CodeHashBits);
         if (!v)
             return 0;
         if (_cmpname(self, v, name, namelen))
@@ -247,10 +247,10 @@ _PyUnicode_GetUcName(PyObject *self, Py_UCS4 code, char *buffer, int buflen,
     }
     /* get offset into phrasebook */
     offset = _PyUnicode_PhrasebookOffset1[(code>>_PyUnicode_PhrasebookShift)];
-    offset = bextra(_PyUnicode_PhrasebookOffset2,
-                    (offset << _PyUnicode_PhrasebookShift) +
-                    (code & ((1 << _PyUnicode_PhrasebookShift) - 1)),
-                    _PyUnicode_PhrasebookOffset2Bits);
+    offset = _bextra(_PyUnicode_PhrasebookOffset2,
+                     (offset << _PyUnicode_PhrasebookShift) +
+                     (code & ((1 << _PyUnicode_PhrasebookShift) - 1)),
+                     _PyUnicode_PhrasebookOffset2Bits);
     if (!offset)
         return 0;
     i = 0;
@@ -271,8 +271,8 @@ _PyUnicode_GetUcName(PyObject *self, Py_UCS4 code, char *buffer, int buflen,
            word has bit 7 set.  the last word in a string ends with
            0x80 */
         w = (_PyUnicode_Lexicon +
-             bextra(_PyUnicode_LexiconOffset, word,
-                    _PyUnicode_LexiconOffsetBits));
+             _bextra(_PyUnicode_LexiconOffset, word,
+                     _PyUnicode_LexiconOffsetBits));
         while (*w < 128) {
             if (i >= buflen)
                 return 0; /* buffer overflow */

third_party/python/Modules/unicodedata_getdecomprecord.c

@@ -31,7 +31,7 @@ _PyUnicode_GetDecompRecord(PyObject *self,
     }
     /* high byte is number of hex bytes (usually one or two), low byte
        is prefix code (from*/
-    decomp = bextra(_PyUnicode_Decomp, *index, _PyUnicode_DecompBits);
+    decomp = _bextra(_PyUnicode_Decomp, *index, _PyUnicode_DecompBits);
     *count = decomp >> 8;
     *prefix = decomp & 255;
     (*index)++;

third_party/python/Modules/unicodedata_nfcnfkc.c

@@ -115,10 +115,10 @@ _PyUnicode_NfcNfkc(PyObject *self, PyObject *input, int k)
           }
           index = f * UNIDATA_TOTAL_LAST + l;
           index1 = _PyUnicode_CompIndex[index >> _PyUnicode_CompShift];
-          code = bextra(_PyUnicode_CompData,
-                        (index1 << _PyUnicode_CompShift)+
-                        (index & ((1 << _PyUnicode_CompShift) - 1)),
-                        _PyUnicode_CompDataBits);
+          code = _bextra(_PyUnicode_CompData,
+                         (index1 << _PyUnicode_CompShift)+
+                         (index & ((1 << _PyUnicode_CompShift) - 1)),
+                         _PyUnicode_CompDataBits);
           if (code == 0)
               goto not_combinable;
           /* Replace the original character. */

third_party/python/Modules/unicodedata_nfdnfkd.c

@@ -97,9 +97,9 @@ _PyUnicode_NfdNfkd(PyObject *self, PyObject *input, int k)
             /* Copy decomposition onto the stack, in reverse
                order.  */
             while(count) {
-                code = bextra(_PyUnicode_Decomp,
-                              index + (--count),
-                              _PyUnicode_DecompBits);
+                code = _bextra(_PyUnicode_Decomp,
+                               index + (--count),
+                               _PyUnicode_DecompBits);
                 stack[stackptr++] = code;
             }
         }