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/Modules/hashtable.h

@@ -1,6 +1,9 @@
 #ifndef Py_HASHTABLE_H
 #define Py_HASHTABLE_H
-/* The whole API is private */
+#include "libc/assert.h"
+#include "libc/str/str.h"
+#include "third_party/python/Include/pyport.h"
+/* clang-format off */
 #ifndef Py_LIMITED_API
 
 /* Single linked list */
@@ -102,23 +105,23 @@ typedef struct _Py_hashtable_t {
 } _Py_hashtable_t;
 
 /* hash a pointer (void*) */
-PyAPI_FUNC(Py_uhash_t) _Py_hashtable_hash_ptr(
+Py_uhash_t _Py_hashtable_hash_ptr(
     struct _Py_hashtable_t *ht,
     const void *pkey);
 
 /* comparison using memcmp() */
-PyAPI_FUNC(int) _Py_hashtable_compare_direct(
+int _Py_hashtable_compare_direct(
     _Py_hashtable_t *ht,
     const void *pkey,
     const _Py_hashtable_entry_t *entry);
 
-PyAPI_FUNC(_Py_hashtable_t *) _Py_hashtable_new(
+_Py_hashtable_t * _Py_hashtable_new(
     size_t key_size,
     size_t data_size,
     _Py_hashtable_hash_func hash_func,
     _Py_hashtable_compare_func compare_func);
 
-PyAPI_FUNC(_Py_hashtable_t *) _Py_hashtable_new_full(
+_Py_hashtable_t * _Py_hashtable_new_full(
     size_t key_size,
     size_t data_size,
     size_t init_size,
@@ -126,12 +129,12 @@ PyAPI_FUNC(_Py_hashtable_t *) _Py_hashtable_new_full(
     _Py_hashtable_compare_func compare_func,
     _Py_hashtable_allocator_t *allocator);
 
-PyAPI_FUNC(void) _Py_hashtable_destroy(_Py_hashtable_t *ht);
+void _Py_hashtable_destroy(_Py_hashtable_t *ht);
 
 /* Return a copy of the hash table */
-PyAPI_FUNC(_Py_hashtable_t *) _Py_hashtable_copy(_Py_hashtable_t *src);
+_Py_hashtable_t * _Py_hashtable_copy(_Py_hashtable_t *src);
 
-PyAPI_FUNC(void) _Py_hashtable_clear(_Py_hashtable_t *ht);
+void _Py_hashtable_clear(_Py_hashtable_t *ht);
 
 typedef int (*_Py_hashtable_foreach_func) (_Py_hashtable_t *ht,
                                            _Py_hashtable_entry_t *entry,
@@ -140,19 +143,19 @@ typedef int (*_Py_hashtable_foreach_func) (_Py_hashtable_t *ht,
 /* Call func() on each entry of the hashtable.
    Iteration stops if func() result is non-zero, in this case it's the result
    of the call. Otherwise, the function returns 0. */
-PyAPI_FUNC(int) _Py_hashtable_foreach(
+int _Py_hashtable_foreach(
     _Py_hashtable_t *ht,
     _Py_hashtable_foreach_func func,
     void *arg);
 
-PyAPI_FUNC(size_t) _Py_hashtable_size(_Py_hashtable_t *ht);
+size_t _Py_hashtable_size(_Py_hashtable_t *ht);
 
 /* Add a new entry to the hash. The key must not be present in the hash table.
    Return 0 on success, -1 on memory error.
 
    Don't call directly this function,
    but use _Py_HASHTABLE_SET() and _Py_HASHTABLE_SET_NODATA() macros */
-PyAPI_FUNC(int) _Py_hashtable_set(
+int _Py_hashtable_set(
     _Py_hashtable_t *ht,
     size_t key_size,
     const void *pkey,
@@ -171,7 +174,7 @@ PyAPI_FUNC(int) _Py_hashtable_set(
 
    Don't call directly this function, but use _Py_HASHTABLE_GET_ENTRY()
    macro */
-PyAPI_FUNC(_Py_hashtable_entry_t*) _Py_hashtable_get_entry(
+_Py_hashtable_entry_t* _Py_hashtable_get_entry(
     _Py_hashtable_t *ht,
     size_t key_size,
     const void *pkey);
@@ -184,7 +187,7 @@ PyAPI_FUNC(_Py_hashtable_entry_t*) _Py_hashtable_get_entry(
    exists, return 0 if the entry does not exist.
 
    Don't call directly this function, but use _Py_HASHTABLE_GET() macro */
-PyAPI_FUNC(int) _Py_hashtable_get(
+int _Py_hashtable_get(
     _Py_hashtable_t *ht,
     size_t key_size,
     const void *pkey,
@@ -196,7 +199,7 @@ PyAPI_FUNC(int) _Py_hashtable_get(
 
 
 /* Don't call directly this function, but use _Py_HASHTABLE_POP() macro */
-PyAPI_FUNC(int) _Py_hashtable_pop(
+int _Py_hashtable_pop(
     _Py_hashtable_t *ht,
     size_t key_size,
     const void *pkey,
@@ -206,6 +209,5 @@ PyAPI_FUNC(int) _Py_hashtable_pop(
 #define _Py_HASHTABLE_POP(TABLE, KEY, DATA) \
     _Py_hashtable_pop(TABLE, sizeof(KEY), &(KEY), sizeof(DATA), &(DATA))
 
-
 #endif   /* Py_LIMITED_API */
 #endif