Make numerous improvements

- Python static hello world now 1.8mb
- Python static fully loaded now 10mb
- Python HTTPS client now uses MbedTLS
- Python REPL now completes import stmts
- Increase stack size for Python for now
- Begin synthesizing posixpath and ntpath
- Restore Python \N{UNICODE NAME} support
- Restore Python NFKD symbol normalization
- Add optimized code path for Intel SHA-NI
- Get more Python unit tests passing faster
- Get Python help() pagination working on NT
- Python hashlib now supports MbedTLS PBKDF2
- Make memcpy/memmove/memcmp/bcmp/etc. faster
- Add Mersenne Twister and Vigna to LIBC_RAND
- Provide privileged __printf() for error code
- Fix zipos opendir() so that it reports ENOTDIR
- Add basic chmod() implementation for Windows NT
- Add Cosmo's best functions to Python cosmo module
- Pin function trace indent depth to that of caller
- Show memory diagram on invalid access in MODE=dbg
- Differentiate stack overflow on crash in MODE=dbg
- Add stb_truetype and tools for analyzing font files
- Upgrade to UNICODE 13 and reduce its binary footprint
- COMPILE.COM now logs resource usage of build commands
- Start implementing basic poll() support on bare metal
- Set getauxval(AT_EXECFN) to GetModuleFileName() on NT
- Add descriptions to strerror() in non-TINY build modes
- Add COUNTBRANCH() macro to help with micro-optimizations
- Make error / backtrace / asan / memory code more unbreakable
- Add fast perfect C implementation of μ-Law and a-Law audio codecs
- Make strtol() functions consistent with other libc implementations
- Improve Linenoise implementation (see also github.com/jart/bestline)
- COMPILE.COM now suppresses stdout/stderr of successful build commands

libc/str/bzero.c

@@ -1,71 +0,0 @@
-/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
-│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8                                :vi│
-╞══════════════════════════════════════════════════════════════════════════════╡
-│ Copyright 2021 Justine Alexandra Roberts Tunney                              │
-│                                                                              │
-│ Permission to use, copy, modify, and/or distribute this software for         │
-│ any purpose with or without fee is hereby granted, provided that the         │
-│ above copyright notice and this permission notice appear in all copies.      │
-│                                                                              │
-│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL                │
-│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED                │
-│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE             │
-│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL         │
-│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR        │
-│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER               │
-│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
-│ PERFORMANCE OF THIS SOFTWARE.                                                │
-╚─────────────────────────────────────────────────────────────────────────────*/
-#include "libc/str/str.h"
-
-typedef long long xmm_t __attribute__((__vector_size__(16), __aligned__(1)));
-
-/**
- * Sets memory to zero.
- */
-void bzero(void *p, size_t n) {
-  char *b;
-  uint64_t x;
-  x = 0;
-  b = p;
-  switch (n) {
-    case 0:
-      break;
-    case 1:
-      __builtin_memcpy(b, &x, 1);
-      break;
-    case 2:
-      __builtin_memcpy(b, &x, 2);
-      break;
-    case 3:
-      __builtin_memcpy(b, &x, 2);
-      __builtin_memcpy(b + 1, &x, 2);
-      break;
-    case 4:
-      __builtin_memcpy(b, &x, 4);
-      break;
-    case 5 ... 7:
-      __builtin_memcpy(b, &x, 4);
-      __builtin_memcpy(b + n - 4, &x, 4);
-      break;
-    case 8:
-      __builtin_memcpy(b, &x, 8);
-      break;
-    case 9 ... 15:
-      __builtin_memcpy(b, &x, 8);
-      __builtin_memcpy(b + n - 8, &x, 8);
-      break;
-    case 16:
-      *(xmm_t *)b = (xmm_t){0};
-      break;
-    default:
-      while (n > 32) {
-        *(xmm_t *)(b + n - 16) = (xmm_t){0};
-        *(xmm_t *)(b + n - 32) = (xmm_t){0};
-        n -= 32;
-      }
-      if (n > 16) *(xmm_t *)(b + n - 16) = (xmm_t){0};
-      *(xmm_t *)b = (xmm_t){0};
-      break;
-  }
-}