Undiamond Python headers

This change gets the Python codebase into a state where it conforms to
the conventions of this codebase. It's now possible to include headers
from Python, without worrying about ordering. Python has traditionally
solved that problem by "diamonding" everything in Python.h, but that's
problematic since it means any change to any Python header invalidates
all the build artifacts. Lastly it makes tooling not work. Since it is
hard to explain to Emacs when I press C-c C-h to add an import line it
shouldn't add the header that actually defines the symbol, and instead
do follow the nonstandard Python convention.

Progress has been made on letting Python load source code from the zip
executable structure via the standard C library APIs. System calss now
recognizes zip!FILENAME alternative URIs as equivalent to zip:FILENAME
since Python uses colon as its delimiter.

Some progress has been made on embedding the notice license terms into
the Python object code. This is easier said than done since Python has
an extremely complicated ownership story.

- Some termios APIs have been added
- Implement rewinddir() dirstream API
- GetCpuCount() API added to Cosmopolitan Libc
- More bugs in Cosmopolitan Libc have been fixed
- zipobj.com now has flags for mangling the path
- Fixed bug a priori with sendfile() on certain BSDs
- Polyfill F_DUPFD and F_DUPFD_CLOEXEC across platforms
- FIOCLEX / FIONCLEX now polyfilled for fast O_CLOEXEC changes
- APE now supports a hybrid solution to no-self-modify for builds
- Many BSD-only magnums added, e.g. O_SEARCH, O_SHLOCK, SF_NODISKIO

third_party/python/Include/pydtrace.h

@@ -2,74 +2,25 @@
 #define Py_DTRACE_H
 COSMOPOLITAN_C_START_
 
-#ifdef WITH_DTRACE
-#include "pydtrace_probes.h"
+#define PyDTrace_LINE(arg0, arg1, arg2)
+#define PyDTrace_FUNCTION_ENTRY(arg0, arg1, arg2)
+#define PyDTrace_FUNCTION_RETURN(arg0, arg1, arg2)
+#define PyDTrace_GC_START(arg0)
+#define PyDTrace_GC_DONE(arg0)
+#define PyDTrace_INSTANCE_NEW_START(arg0)
+#define PyDTrace_INSTANCE_NEW_DONE(arg0)
+#define PyDTrace_INSTANCE_DELETE_START(arg0)
+#define PyDTrace_INSTANCE_DELETE_DONE(arg0)
 
-/* pydtrace_probes.h, on systems with DTrace, is auto-generated to include
-   `PyDTrace_{PROBE}` and `PyDTrace_{PROBE}_ENABLED()` macros for every probe
-   defined in pydtrace_provider.d.
-
-   Calling these functions must be guarded by a `PyDTrace_{PROBE}_ENABLED()`
-   check to minimize performance impact when probing is off. For example:
-
-       if (PyDTrace_FUNCTION_ENTRY_ENABLED())
-           PyDTrace_FUNCTION_ENTRY(f);
-*/
-
-#else
-
-/* Without DTrace, compile to nothing. */
-
-static inline void PyDTrace_LINE(const char *arg0, const char *arg1, int arg2) {
-}
-static inline void PyDTrace_FUNCTION_ENTRY(const char *arg0, const char *arg1,
-                                           int arg2) {
-}
-static inline void PyDTrace_FUNCTION_RETURN(const char *arg0, const char *arg1,
-                                            int arg2) {
-}
-static inline void PyDTrace_GC_START(int arg0) {
-}
-static inline void PyDTrace_GC_DONE(int arg0) {
-}
-static inline void PyDTrace_INSTANCE_NEW_START(int arg0) {
-}
-static inline void PyDTrace_INSTANCE_NEW_DONE(int arg0) {
-}
-static inline void PyDTrace_INSTANCE_DELETE_START(int arg0) {
-}
-static inline void PyDTrace_INSTANCE_DELETE_DONE(int arg0) {
-}
-
-static inline int PyDTrace_LINE_ENABLED(void) {
-  return 0;
-}
-static inline int PyDTrace_FUNCTION_ENTRY_ENABLED(void) {
-  return 0;
-}
-static inline int PyDTrace_FUNCTION_RETURN_ENABLED(void) {
-  return 0;
-}
-static inline int PyDTrace_GC_START_ENABLED(void) {
-  return 0;
-}
-static inline int PyDTrace_GC_DONE_ENABLED(void) {
-  return 0;
-}
-static inline int PyDTrace_INSTANCE_NEW_START_ENABLED(void) {
-  return 0;
-}
-static inline int PyDTrace_INSTANCE_NEW_DONE_ENABLED(void) {
-  return 0;
-}
-static inline int PyDTrace_INSTANCE_DELETE_START_ENABLED(void) {
-  return 0;
-}
-static inline int PyDTrace_INSTANCE_DELETE_DONE_ENABLED(void) {
-  return 0;
-}
-
-#endif /* !WITH_DTRACE */
+#define PyDTrace_LINE_ENABLED()                  0
+#define PyDTrace_FUNCTION_ENTRY_ENABLED()        0
+#define PyDTrace_FUNCTION_RETURN_ENABLED()       0
+#define PyDTrace_GC_START_ENABLED()              0
+#define PyDTrace_GC_DONE_ENABLED()               0
+#define PyDTrace_INSTANCE_NEW_START_ENABLED()    0
+#define PyDTrace_INSTANCE_NEW_DONE_ENABLED()     0
+#define PyDTrace_INSTANCE_DELETE_START_ENABLED() 0
+#define PyDTrace_INSTANCE_DELETE_DONE_ENABLED()  0
 
 COSMOPOLITAN_C_END_
 #endif /* !Py_DTRACE_H */