Make improvements

- Fix build flakes
- Polyfill SIGWINCH on Windows
- Fix an execve issue on Windows
- Make strerror show more information
- Improve cmd.exe setup/teardown on Windows
- Support bracketed paste mode in Blinkenlights
- Show keyboard shortcuts in Blinkenlights status bar
- Fixed copy_file_range() and copyfile() w/ zip filesystem
- Size optimize GetDosArgv() to keep life.com 12kb in size
- Improve Blinkenlights ability to load weird ELF executables
- Fix program_executable_name and add GetInterpreterExecutableName
- Make Python in tiny mode fail better if docstrings are requested
- Update Python test exclusions in tiny* modes such as tinylinux
- Add bulletproof unbreakable kprintf() troubleshooting function
- Remove "oldskool" keyword from ape.S for virus scanners
- Fix issue that caused backtraces to not print sometimes
- Improve Blinkenlights serial uart character i/o
- Make clock_gettime() not clobber errno on xnu
- Improve sha256 cpuid check for old computers
- Integrate some bestline linenoise fixes
- Show runit process names better in htop
- Remove SIGPIPE from ShowCrashReports()
- Make realpath() not clobber errno
- Avoid attaching GDB on non-Linux
- Improve img.com example

examples/nesemu1.cc

@@ -1703,7 +1703,7 @@ int PlayGame(const char* romfile, const char* opt_tasfile) {
   if ((ffplay = commandvenv("FFPLAY", "ffplay"))) {
     devnull = open("/dev/null", O_WRONLY | O_CLOEXEC);
     pipe2(pipefds, O_CLOEXEC);
-    if (!(playpid_ = vfork())) {
+    if (!(playpid_ = fork())) {
       const char* const args[] = {
           "ffplay",   "-nodisp", "-loglevel", "quiet", "-fflags",
           "nobuffer", "-ac",     "1",         "-ar",   "1789773",