Module Name:	src
Committed By:	tv
Date:		Sun Feb  7 00:56:55 UTC 1999

Modified Files:
	src/bin/pax: options.c
Log Message:
Fix opt_add to take const char * so that it can be passed a constant
string legally (it strdup()s the argument).  How pax-as-tar `-o' ever
worked without a coredump is beyond me...

Also modify pax-as-tar `-o' to do three things, which depend on the
create/extract mode:

- write V7 format archives (which, though part of GNU tar, actually
goes along with the following point--after all, old pax-as-tar created
V7 archives by default);
- write archives with "write_opt=nodir", as pax already did, and as
specified by 4.2BSD;
- extract archives with owner/group set to invoking user, as specified
by SUS.