patch to allow custom libgcj.spec flags at configure-time

[Tom Tromey]

>>>>> "Adam" == Adam Megacz <patches@lists.megacz.com> writes:

Adam> How about I commit with --with-spec (instead of --with-jc1-spec) and
Adam> drop --with-lib-spec?

I'm a bit reluctant to do this at all.  We don't want people to rely
on it.  For instance, gcc hackers periodically talk about getting rid
of specs entirely.  Then anybody relying on this will be screwed --
whereas if we keep the spec stuff as an internal implementation
detail, we don't need to worry.

Tom