Revert the changes that 827f25f made to libc/calls/readv-metal.c regarding internal functions having underlines due to 6f7d0cb being missing at the time.
Use the versions of libc/intrin/lockfileex.c and libc/intrin/unlockfileex.c from 3f49889 to account for strace changes.
Revert d86916e and use the versions of libc/calls/getgroups.c, libc/calls/setgroups.c, libc/runtime/getlogin.c and libc/runtime/getlogin_r.c from 4c40c50 to again account for strace changes.
Fix include statements and internal underlined function calls in libc/stdio/cocmd.c, libc/testlib/extract.c and test/libc/stdio/system_test.c.
Fix missing closing paren in nsync memory size macro in memtrack.internal.h.
8f001857de