exclude option change between tar 1.12 & 1.13

[Matthew Braun]

Between tar versions 1.12 & 1.13, this change listed in ChangeLog was
made:

        * src/list.c (read_and):
        Use excluded_filename instead of check_exclude.
        Check base name of incoming file name, not entire file name, when
        deciding whether to exclude it.

Why?  (I'm sure there is a reason. ;-)

I'd rather see exclude be a relative path like it was in tar-1.12, which
would match the vendor behavior under Solaris 8.  With tar-1.12, if the
user wants to exclude all files named blah, they could make the glob
'*blah'.  With tar-1.13, there is no way to only exclude something like
"var/tmp", you can only exclude "tmp" which would be EVERY occurrence of
"tmp" the directory being tar'd.

Thanks for any feedback on the --exclude option (also applies to -X).

Matthew.