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

tool/build/lib/fds.h

@@ -1,6 +1,7 @@
 #ifndef COSMOPOLITAN_TOOL_BUILD_LIB_FDS_H_
 #define COSMOPOLITAN_TOOL_BUILD_LIB_FDS_H_
 #include "libc/calls/struct/iovec.h"
+#include "libc/sock/sock.h"
 #if !(__ASSEMBLER__ + __LINKER__ + 0)
 COSMOPOLITAN_C_START_
 
@@ -14,17 +15,18 @@ struct MachineFdCb {
   ssize_t (*readv)(int, const struct iovec *, int);
   ssize_t (*writev)(int, const struct iovec *, int);
   int (*ioctl)(int, uint64_t, void *);
+  int (*poll)(struct pollfd *, uint64_t, int32_t);
 };
 
 struct MachineFd {
   int fd;
-  struct MachineFdCb * cb;
+  struct MachineFdCb *cb;
 };
 
 struct MachineFds {
   size_t i, n;
-  struct MachineFd * p;
-  struct MachineFdClosed * closed;
+  struct MachineFd *p;
+  struct MachineFdClosed *closed;
 };
 
 int MachineFdAdd(struct MachineFds *);