udis86 1.7.1.

Closes #20115.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
pth: run make test

If pth is miscompiled, other software that uses it can fail
mysteriously without a clear indication of the source of the
problem. This causes problems with gnupg2 on some platforms,
for example.

pth's `make test` will reveal this kind of problem, so always run
that to be safe.

See: mistydemeo/tigerbrew#39.
git: revert to 1.8.2.3

gitignore parsing has broken in 1.8.3; see:
http://article.gmane.org/gmane.comp.version-control.git/225675

This reverts commit 34ce866fdee933650586ee3c8357c448254917e6.