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/stb/stb_image_resize.c

@@ -394,9 +394,7 @@ static float stbir__support_trapezoid(float scale) {
 
 static float stbir__filter_triangle(float x, float s) {
   STBIR__UNUSED_PARAM(s);
-
   x = (float)fabs(x);
-
   if (x <= 1.0f)
     return 1 - x;
   else
@@ -405,40 +403,31 @@ static float stbir__filter_triangle(float x, float s) {
 
 static float stbir__filter_cubic(float x, float s) {
   STBIR__UNUSED_PARAM(s);
-
   x = (float)fabs(x);
-
   if (x < 1.0f)
     return (4 + x * x * (3 * x - 6)) / 6;
   else if (x < 2.0f)
     return (8 + x * (-12 + x * (6 - x))) / 6;
-
   return (0.0f);
 }
 
 static float stbir__filter_catmullrom(float x, float s) {
   STBIR__UNUSED_PARAM(s);
-
   x = (float)fabs(x);
-
   if (x < 1.0f)
     return 1 - x * x * (2.5f - 1.5f * x);
   else if (x < 2.0f)
     return 2 - x * (4 + x * (0.5f * x - 2.5f));
-
   return (0.0f);
 }
 
 static float stbir__filter_mitchell(float x, float s) {
   STBIR__UNUSED_PARAM(s);
-
   x = (float)fabs(x);
-
   if (x < 1.0f)
     return (16 + x * x * (21 * x - 36)) / 18;
   else if (x < 2.0f)
     return (32 + x * (-60 + x * (36 - 7 * x))) / 18;
-
   return (0.0f);
 }
 
@@ -1080,7 +1069,7 @@ static float* stbir__add_empty_ring_buffer_entry(stbir__info* stbir_info,
   ring_buffer = stbir__get_ring_buffer_entry(
       stbir_info->ring_buffer, ring_buffer_index,
       stbir_info->ring_buffer_length_bytes / sizeof(float));
-  memset(ring_buffer, 0, stbir_info->ring_buffer_length_bytes);
+  bzero(ring_buffer, stbir_info->ring_buffer_length_bytes);
 
   return ring_buffer;
 }
@@ -1340,8 +1329,8 @@ static void stbir__decode_and_resample_downsample(stbir__info* stbir_info,
   // Decode the nth scanline from the source image into the decode buffer.
   stbir__decode_scanline(stbir_info, n);
 
-  memset(stbir_info->horizontal_buffer, 0,
-         stbir_info->output_w * stbir_info->channels * sizeof(float));
+  bzero(stbir_info->horizontal_buffer,
+        stbir_info->output_w * stbir_info->channels * sizeof(float));
 
   // Now resample it into the horizontal buffer.
   if (stbir__use_width_upsampling(stbir_info))
@@ -1584,7 +1573,7 @@ static void stbir__resample_vertical_upsample(stbir__info* stbir_info, int n) {
 
   STBIR_ASSERT(stbir__use_height_upsampling(stbir_info));
 
-  memset(encode_buffer, 0, output_w * sizeof(float) * channels);
+  bzero(encode_buffer, output_w * sizeof(float) * channels);
 
   // I tried reblocking this for better cache usage of encode_buffer
   // (using x_outer, k, x_inner), but it lost speed. -- stb
@@ -2104,7 +2093,7 @@ static int stbir__resize_allocated(
 
   if (tempmem_size_in_bytes < memory_required) return 0;
 
-  memset(tempmem, 0, tempmem_size_in_bytes);
+  bzero(tempmem, tempmem_size_in_bytes);
 
   info->input_data = input_data;
   info->input_stride_bytes = width_stride_input;