Polish recent changes and make improvements

- Simulate SIGPIPE on Windows NT
- Fix commandv() regression on Windows NT
- Fix sigprocmask() strace bug on OpenBSD
- Add many more system calls to --strace logging
- Make errno state more pristine in redbean strace

libc/zipos/zipos.internal.h

@@ -1,16 +1,9 @@
 #ifndef COSMOPOLITAN_LIBC_ZIPOS_ZIPOS_H_
 #define COSMOPOLITAN_LIBC_ZIPOS_ZIPOS_H_
 #include "libc/calls/calls.h"
-#include "libc/calls/strace.internal.h"
 #if !(__ASSEMBLER__ + __LINKER__ + 0)
 COSMOPOLITAN_C_START_
 
-#if DEBUGSYS
-#define ZTRACE(FMT, ...) kprintf("ZIP: " FMT "\n", ##__VA_ARGS__)
-#else
-#define ZTRACE(FMT, ...) (void)0
-#endif
-
 struct stat;
 struct iovec;