genini: support multiple compression formats

[Charles Wilson]

Charles Wilson wrote:
> OK, I've tested the following. Better?
> 
> 2010-03-11  Charles Wilson  <...>
> 
> 	* genini (parsedir): Support tarballs whose name ends in gz,
> 	lzma, and xz in addition to bz2.
> 	(tarball): Test for existence of tarballs to determine which
> 	compression format/extension is used. If not found, default
> 	to .bz2.
> 	(addfiles): Ripple from changes to tarball().

forgot to remove one useless line:

+    my @exts = qw(bz2 xz gz lzma);

is obsolete, and should not be in the patch. consider it removed...

--
Chuck