Changes since 3.10.20:
* arj_arcv.c, arj_file.c, arj_proc.c, arj_user.c, arjtypes.c,
environ.c, externs.c, externs.h, makefile:
Merged with the remaining part of TCO fixes to make up for 3.10.21
* defines.h, encode.c, environ.c, environ.h, fmemcmp.asm, misc.c,
rearj.c: Resync with TCO to close any outstanding bugs
* arj.c: Rudimentary Borland code caused the filenames in argv[] to
be mishandled under Win32
* register.c: REGISTER might fail due to _fput_* changes
f44073a32e