Unbloat build config

- 10.5% reduction of o//depend dependency graph
- 8.8% reduction in latency of make command
- Fix issue with temporary file cleanup

There's a new -w option in compile.com that turns off the recent
Landlock output path workaround for "good commands" which do not
unlink() the output file like GNU tooling does.

Our new GNU Make unveil sandboxing appears to have zero overhead
in the grand scheme of things. Full builds are pretty fast since
the only thing that's actually slowed us down is probably libcxx

    make -j16 MODE=rel
    RL: took 85,732,063µs wall time
    RL: ballooned to 323,612kb in size
    RL: needed 828,560,521µs cpu (11% kernel)
    RL: caused 39,080,670 page faults (99% memcpy)
    RL: 350,073 context switches (72% consensual)
    RL: performed 0 reads and 11,494,960 write i/o operations

pledge() and unveil() no longer consider ENOSYS to be an error.
These functions have also been added to Python's cosmo module.

This change also removes some WIN32 APIs and System Five magnums
which we're not using and it's doubtful anyone else would be too

third_party/python/Python/cosmomodule.c

@@ -19,7 +19,9 @@
 #define PY_SSIZE_T_CLEAN
 #include "dsp/scale/cdecimate2xuint8x8.h"
 #include "libc/bits/popcnt.h"
+#include "libc/calls/calls.h"
 #include "libc/dce.h"
+#include "libc/errno.h"
 #include "libc/macros.internal.h"
 #include "libc/math.h"
 #include "libc/mem/mem.h"
@@ -27,6 +29,7 @@
 #include "libc/nexgen32e/rdtsc.h"
 #include "libc/nexgen32e/rdtscp.h"
 #include "libc/runtime/runtime.h"
+#include "libc/str/str.h"
 #include "third_party/python/Include/abstract.h"
 #include "third_party/python/Include/import.h"
 #include "third_party/python/Include/longobject.h"
@@ -187,6 +190,59 @@ cosmo_popcount(PyObject *self, PyObject *args)
     return PyLong_FromSize_t(_countbits(p, n));
 }
 
+PyDoc_STRVAR(pledge_doc,
+"pledge($module, promises, execpromises)\n\
+--\n\n\
+Permits syscall operations, e.g.\n\
+\n\
+    >>> cosmo.pledge('stdio rpath tty', None)\n\
+\n\
+This function implements the OpenBSD pledge() API for\n\
+OpenBSD and Linux, where we use SECCOMP BPF. Read the\n\
+Cosmopolitan Libc documentation to learn more.");
+
+static PyObject *
+cosmo_pledge(PyObject *self, PyObject *args)
+{
+    int e = errno;
+    const char *x, *y;
+    if (!PyArg_ParseTuple(args, "sz:pledge", &x, &y)) return 0;
+    if (!pledge(x, y)) {
+        Py_RETURN_NONE;
+    } else {
+        PyErr_SetString(PyExc_SystemError, strerror(errno));
+        errno = e;
+        return 0;
+    }
+}
+
+PyDoc_STRVAR(unveil_doc,
+"unveil($module, path, permissions)\n\
+--\n\n\
+Permits filesystem operations, e.g.\n\
+\n\
+    >>> cosmo.unveil('.', 'rwcx')\n\
+    >>> cosmo.unveil(None, None)\n\
+\n\
+This function implements the OpenBSD unveil() API for\n\
+OpenBSD and Linux where we use Landlock LSM. Read the\n\
+Cosmopolitan Libc documentation to learn more.");
+
+static PyObject *
+cosmo_unveil(PyObject *self, PyObject *args)
+{
+    int e = errno;
+    const char *x, *y;
+    if (!PyArg_ParseTuple(args, "zz:unveil", &x, &y)) return 0;
+    if (!unveil(x, y)) {
+        Py_RETURN_NONE;
+    } else {
+        PyErr_SetString(PyExc_SystemError, strerror(errno));
+        errno = e;
+        return 0;
+    }
+}
+
 PyDoc_STRVAR(exit1_doc,
 "exit1($module)\n\
 --\n\n\
@@ -269,6 +325,8 @@ static PyMethodDef cosmo_methods[] = {
     {"exit1", cosmo_exit1, METH_NOARGS, exit1_doc},
     {"rdtsc", cosmo_rdtsc, METH_NOARGS, rdtsc_doc},
     {"crc32c", cosmo_crc32c, METH_VARARGS, crc32c_doc},
+    {"pledge", cosmo_pledge, METH_VARARGS, pledge_doc},
+    {"unveil", cosmo_unveil, METH_VARARGS, unveil_doc},
     {"syscount", cosmo_syscount, METH_NOARGS, syscount_doc},
     {"popcount", cosmo_popcount, METH_VARARGS, popcount_doc},
     {"decimate", cosmo_decimate, METH_VARARGS, decimate_doc},

third_party/python/Python/dtoa.c

@@ -7,6 +7,7 @@
 #include "libc/assert.h"
 #include "libc/errno.h"
 #include "libc/math.h"
+#include "libc/runtime/runtime.h"
 #include "third_party/python/Include/pymem.h"
 #include "third_party/python/Include/pyport.h"
 /* clang-format off */

third_party/python/Python/errors.c

@@ -5,6 +5,7 @@
 │ https://docs.python.org/3/license.html                                       │
 ╚─────────────────────────────────────────────────────────────────────────────*/
 #include "libc/errno.h"
+#include "libc/mem/mem.h"
 #include "libc/nt/enum/formatmessageflags.h"
 #include "libc/nt/enum/lang.h"
 #include "libc/nt/memory.h"

third_party/python/Python/fileutils.c

@@ -15,6 +15,7 @@
 #include "libc/sysv/consts/fio.h"
 #include "libc/sysv/consts/o.h"
 #include "libc/unicode/locale.h"
+#include "libc/unicode/unicode.h"
 #include "third_party/python/Include/bytesobject.h"
 #include "third_party/python/Include/ceval.h"
 #include "third_party/python/Include/fileutils.h"

third_party/python/Python/import.c

@@ -11,14 +11,15 @@
 #include "libc/calls/struct/stat.macros.h"
 #include "libc/fmt/conv.h"
 #include "libc/macros.internal.h"
+#include "libc/mem/mem.h"
 #include "libc/runtime/gc.h"
-#include "libc/x/x.h"
 #include "libc/sysv/consts/o.h"
 #include "libc/sysv/consts/s.h"
+#include "libc/x/x.h"
 #include "third_party/python/Include/Python-ast.h"
 #include "third_party/python/Include/abstract.h"
-#include "third_party/python/Include/boolobject.h"
 #include "third_party/python/Include/bltinmodule.h"
+#include "third_party/python/Include/boolobject.h"
 #include "third_party/python/Include/ceval.h"
 #include "third_party/python/Include/code.h"
 #include "third_party/python/Include/dictobject.h"