[RFA/commit] use libiconv.a instead of -liconv for in-tree libiconv

[Tom Tromey]

>>>>> "Joel" == Joel Brobecker <brobecker@adacore.com> writes:

Joel> Trivia: libiconv on Tru64 5.1 does not handle encoding ISO-8859-1.

That sounds very strange, because I would expect libiconv to always have
this built in.  Or do you mean that the native iconv doesn't handle
this?

Joel> I will monitor AdaCore's nightly builds on all our platforms
Joel> for unexpected issues, but I thought I'd put this change out for
Joel> review early, in case there are any suggestions.

It seems reasonable to me.

Tom