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/fmt/wcstoumax.c

@@ -35,21 +35,19 @@
  * @see strtoimax()
  */
 uintmax_t wcstoumax(const wchar_t *s, wchar_t **endptr, int base) {
-  int c, d;
-  uintmax_t x;
-  c = *s;
+  char t = 0;
+  int d, c = *s;
+  uintmax_t x = 0;
   CONSUME_SPACES(s, c);
   GET_SIGN(s, c, d);
   GET_RADIX(s, c, base);
-  x = 0;
   if ((c = kBase36[c & 255]) && --c < base) {
+    t |= 1;
     do {
       x *= base;
       x += c;
     } while ((c = kBase36[*++s & 255]) && --c < base);
   }
-  if (endptr) {
-    *endptr = s;
-  }
+  if (t && endptr) *endptr = s;
   return d > 0 ? x : -x;
 }