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/python/Parser/tokenizer.c

@@ -1568,14 +1568,14 @@ tok_get(struct tok_state *tok, char **p_start, char **p_end)
             /* Current token length is 5. */
             if (tok->async_def) {
                 /* We're inside an 'async def' function. */
-                if (memcmp(tok->start, "async", 5) == 0) {
+                if (!bcmp(tok->start, "async", 5)) {
                     return ASYNC;
                 }
-                if (memcmp(tok->start, "await", 5) == 0) {
+                if (!bcmp(tok->start, "await", 5)) {
                     return AWAIT;
                 }
             }
-            else if (memcmp(tok->start, "async", 5) == 0) {
+            else if (!bcmp(tok->start, "async", 5)) {
                 /* The current token is 'async'.
                    Look ahead one token.*/
 
@@ -1592,7 +1592,7 @@ tok_get(struct tok_state *tok, char **p_start, char **p_end)
 
                 if (ahead_tok_kind == NAME
                     && ahead_tok.cur - ahead_tok.start == 3
-                    && memcmp(ahead_tok.start, "def", 3) == 0)
+                    && !bcmp(ahead_tok.start, "def", 3))
                 {
                     /* The next token is going to be 'def', so instead of
                        returning 'async' NAME token, we return ASYNC. */