Make fixes, improvements, and chibicc python bindings

- python now mixes audio 10x faster
- python octal notation is restored
- chibicc now builds code 3x faster
- chibicc now has help documentation
- chibicc can now generate basic python bindings
- linenoise now supports some paredit-like features

See #141

libc/mem/hook/hook.internal.h

@@ -13,6 +13,7 @@ extern void *(*hook_valloc)(size_t);
 extern void *(*hook_pvalloc)(size_t);
 extern int (*hook_malloc_trim)(size_t);
 extern size_t (*hook_malloc_usable_size)(const void *);
+extern size_t (*hook_bulk_free)(void *[], size_t);
 
 COSMOPOLITAN_C_END_
 #endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */