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

third_party/quickjs/libregexp.c

@@ -963,7 +963,7 @@ static int re_check_advance(const uint8_t *bc_buf, int bc_buf_len)
     ret = -2; /* not known yet */
     pos = 0;
     has_back_reference = FALSE;
-    memset(capture_bitmap, 0, sizeof(capture_bitmap));
+    bzero(capture_bitmap, sizeof(capture_bitmap));
 
     while (pos < bc_buf_len) {
         opcode = bc_buf[pos];
@@ -1832,7 +1832,7 @@ uint8_t *lre_compile(int *plen, char *error_msg, int error_msg_size,
     int stack_size;
     BOOL is_sticky;
 
-    memset(s, 0, sizeof(*s));
+    bzero(s, sizeof(*s));
     s->opaque = opaque;
     s->buf_ptr = (const uint8_t *)buf;
     s->buf_end = s->buf_ptr + buf_len;