lzma tarball support

[Anders F Björklund]

Vincent Lefevre wrote:

>> To install the "lzma" program, see port lzmautils.
>
> So, should the port build-depend on lzmautils?

Probably not, lzma(1) could come from anywhere ?

The .tar.bz2 doesn't really depend on bzip2 either,
for instance. And neither does .zip on any unzip.
So I guess they all live in the grey zone between
requirements of base and requirements of ports...

Anyway, "use_lzma" should probably handle that ?
No need to have to copy/paste stuff to all ports.

--anders