backport: ltcf-c.sh: Use $objext, not $ac_objext.

backport: ltcf-c.sh: Use $objext, not $ac_objext.

Merged from gcc-3_0-branch:
2001-07-30  Jeff Sturm  <jsturm@one-pont.com>
* ltcf-c.sh: Use $objext, not $ac_objext.
2001-07-27  Mark Kettenis  <kettenis@gnu.org>
* ltcf-cxx.sh: Add support for GNU.
2001-07-22  Timothy Wall  <twall@redhat.com>
* ltcf-c.sh: Don't disable shared libraries for AIX5/IA64.  Preserve
default settings if using GNU tools with that configuration.
* ltcf-cxx.sh: Ditto.
* ltcf-gcj.sh: Ditto.
2001-07-21  Michael Chastain  <chastain@redhat.com>
* ltconfig: Set max_cmd_len to a maximum of 512Kb, as it seems some
HPUX 11.0 systems have trouble with 1MB.  Mark as gcc-local.
* ltmain.sh: Mark as gcc-local.

From-SVN: r45341