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/mbedtls/aes.h

@@ -108,7 +108,7 @@ void mbedtls_aes_xts_free( mbedtls_aes_xts_context *ctx );
  * \return         #MBEDTLS_ERR_AES_INVALID_KEY_LENGTH on failure.
  */
 int mbedtls_aes_setkey_enc( mbedtls_aes_context *ctx, const unsigned char *key,
-                    unsigned int keybits );
+                            unsigned int keybits );
 
 /**
  * \brief          This function sets the decryption key.
@@ -126,7 +126,7 @@ int mbedtls_aes_setkey_enc( mbedtls_aes_context *ctx, const unsigned char *key,
  * \return         #MBEDTLS_ERR_AES_INVALID_KEY_LENGTH on failure.
  */
 int mbedtls_aes_setkey_dec( mbedtls_aes_context *ctx, const unsigned char *key,
-                    unsigned int keybits );
+                            unsigned int keybits );
 
 #if defined(MBEDTLS_CIPHER_MODE_XTS)
 /**
@@ -194,9 +194,9 @@ int mbedtls_aes_xts_setkey_dec( mbedtls_aes_xts_context *ctx,
  * \return         \c 0 on success.
  */
 int mbedtls_aes_crypt_ecb( mbedtls_aes_context *ctx,
-                    int mode,
-                    const unsigned char input[16],
-                    unsigned char output[16] );
+                           int mode,
+                           const unsigned char input[16],
+                           unsigned char output[16] );
 
 #if defined(MBEDTLS_CIPHER_MODE_CBC)
 /**
@@ -241,11 +241,11 @@ int mbedtls_aes_crypt_ecb( mbedtls_aes_context *ctx,
  *                 on failure.
  */
 int mbedtls_aes_crypt_cbc( mbedtls_aes_context *ctx,
-                    int mode,
-                    size_t length,
-                    unsigned char iv[16],
-                    const unsigned char *input,
-                    unsigned char *output );
+                           int mode,
+                           size_t length,
+                           unsigned char iv[16],
+                           const unsigned char *input,
+                           unsigned char *output );
 #endif /* MBEDTLS_CIPHER_MODE_CBC */
 
 #if defined(MBEDTLS_CIPHER_MODE_XTS)
@@ -333,12 +333,12 @@ int mbedtls_aes_crypt_xts( mbedtls_aes_xts_context *ctx,
  * \return         \c 0 on success.
  */
 int mbedtls_aes_crypt_cfb128( mbedtls_aes_context *ctx,
-                       int mode,
-                       size_t length,
-                       size_t *iv_off,
-                       unsigned char iv[16],
-                       const unsigned char *input,
-                       unsigned char *output );
+                              int mode,
+                              size_t length,
+                              size_t *iv_off,
+                              unsigned char iv[16],
+                              const unsigned char *input,
+                              unsigned char *output );
 
 /**
  * \brief This function performs an AES-CFB8 encryption or decryption
@@ -377,11 +377,11 @@ int mbedtls_aes_crypt_cfb128( mbedtls_aes_context *ctx,
  * \return         \c 0 on success.
  */
 int mbedtls_aes_crypt_cfb8( mbedtls_aes_context *ctx,
-                    int mode,
-                    size_t length,
-                    unsigned char iv[16],
-                    const unsigned char *input,
-                    unsigned char *output );
+                            int mode,
+                            size_t length,
+                            unsigned char iv[16],
+                            const unsigned char *input,
+                            unsigned char *output );
 #endif /*MBEDTLS_CIPHER_MODE_CFB */
 
 #if defined(MBEDTLS_CIPHER_MODE_OFB)
@@ -431,11 +431,11 @@ int mbedtls_aes_crypt_cfb8( mbedtls_aes_context *ctx,
  * \return         \c 0 on success.
  */
 int mbedtls_aes_crypt_ofb( mbedtls_aes_context *ctx,
-                       size_t length,
-                       size_t *iv_off,
-                       unsigned char iv[16],
-                       const unsigned char *input,
-                       unsigned char *output );
+                           size_t length,
+                           size_t *iv_off,
+                           unsigned char iv[16],
+                           const unsigned char *input,
+                           unsigned char *output );
 
 #endif /* MBEDTLS_CIPHER_MODE_OFB */
 
@@ -517,12 +517,12 @@ int mbedtls_aes_crypt_ofb( mbedtls_aes_context *ctx,
  * \return                 \c 0 on success.
  */
 int mbedtls_aes_crypt_ctr( mbedtls_aes_context *ctx,
-                       size_t length,
-                       size_t *nc_off,
-                       unsigned char nonce_counter[16],
-                       unsigned char stream_block[16],
-                       const unsigned char *input,
-                       unsigned char *output );
+                           size_t length,
+                           size_t *nc_off,
+                           unsigned char nonce_counter[16],
+                           unsigned char stream_block[16],
+                           const unsigned char *input,
+                           unsigned char *output );
 #endif /* MBEDTLS_CIPHER_MODE_CTR */
 
 /**