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

tool/build/zipobj.c

@@ -45,6 +45,7 @@ bool basenamify_;
 int64_t image_base_;
 int strip_components_;
 const char *path_prefix_;
+struct timespec timestamp;
 
 wontreturn void PrintUsage(int rc, FILE *f) {
   fprintf(f, "%s%s%s\n", "Usage: ", program_invocation_name,
@@ -106,7 +107,6 @@ void ProcessFile(struct ElfWriter *elf, const char *path) {
   size_t pathlen;
   struct stat st;
   const char *name;
-  struct timespec timestamp;
   CHECK_NE(-1, (fd = open(path, O_RDONLY)));
   CHECK_NE(-1, fstat(fd, &st));
   if (S_ISDIR(st.st_mode)) {
@@ -127,11 +127,11 @@ void ProcessFile(struct ElfWriter *elf, const char *path) {
     if (path_prefix_) name = gc(xjoinpaths(path_prefix_, name));
   }
   if (S_ISDIR(st.st_mode)) {
+    st.st_size = 0;
     if (!endswith(name, "/")) {
       name = gc(xasprintf("%s/", name));
     }
   }
-  memset(&timestamp, 0, sizeof(timestamp));
   elfwriter_zip(elf, name, name, strlen(name), map, st.st_size, st.st_mode,
                 timestamp, timestamp, timestamp, nocompress_, image_base_);
   if (st.st_size) CHECK_NE(-1, munmap(map, st.st_size));