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/sock/epoll.c

@@ -306,7 +306,7 @@ static textwindows int err_check_handle(int64_t handle) {
 }
 
 static textwindows void tree_init(struct Tree *tree) {
-  memset(tree, 0, sizeof *tree);
+  bzero(tree, sizeof *tree);
 }
 
 static textwindows void ts_tree_init(struct TsTree *ts_tree) {
@@ -492,7 +492,7 @@ static textwindows int port__close_iocp(struct PortState *port_state) {
 }
 
 static textwindows void tree_node_init(struct TreeNode *node) {
-  memset(node, 0, sizeof *node);
+  bzero(node, sizeof *node);
 }
 
 static textwindows void reflock_init(struct RefLock *reflock) {
@@ -567,7 +567,7 @@ static textwindows struct PortState *port_new(int64_t *iocp_handle_out) {
   if (!port_state) goto err1;
   iocp_handle = port__create_iocp();
   if (!iocp_handle) goto err2;
-  memset(port_state, 0, sizeof *port_state);
+  bzero(port_state, sizeof *port_state);
   port_state->iocp_handle = iocp_handle;
   tree_init(&port_state->sock_tree);
   queue_init(&port_state->sock_update_queue);
@@ -867,7 +867,7 @@ static textwindows struct PollGroup *poll_group__new(
   struct Queue *poll_group_queue = port_get_poll_group_queue(port_state);
   struct PollGroup *poll_group = malloc(sizeof *poll_group);
   if (!poll_group) RETURN_SET_ERROR(NULL, kNtErrorNotEnoughMemory);
-  memset(poll_group, 0, sizeof *poll_group);
+  bzero(poll_group, sizeof *poll_group);
   queue_node_init(&poll_group->queue_node);
   poll_group->port_state = port_state;
   if (afd_create_device_handle(iocp_handle, &poll_group->afd_device_handle) <
@@ -1225,7 +1225,7 @@ static textwindows struct SockState *sock_new(struct PortState *port_state,
   if (!poll_group) return NULL;
   sock_state = sock__alloc();
   if (!sock_state) goto err1;
-  memset(sock_state, 0, sizeof *sock_state);
+  bzero(sock_state, sizeof *sock_state);
   sock_state->base_socket = base_socket;
   sock_state->poll_group = poll_group;
   tree_node_init(&sock_state->tree_node);