[PATCH 3/4][PR 71931] Fix libitm tests

[Torvald Riegel]

On Wed, 2016-08-24 at 20:08 +0100, Szabolcs Nagy wrote:
> Pass build time CC make var down to dejagnu so the sysroot
> is set correctly when gcc is built with --with-build-sysroot.
> 
> libitm/
> 2016-08-24  Szabolcs Nagy  <szabolcs.nagy@arm.com>
> 
> 	PR testsuite/71931
> 	* configure.ac: Add AC_CONFIG_FILES.
> 	* configure: Regenerated.
> 	* testuite/Makefile.am: Add rule for libitm-test-support.exp.
> 	* testuite/Makefile.in: Regenerated.
> 	* testuite/libitm-test-support.exp.in: New.
> 	* testuite/lib/libitm.exp (libitm_init): Use BUILD_CC.
> 

I don't know enough about the build system to really review this.  If a
similar patch has been ACKed and applied for libatomic (71931 states
that both are affected), then I guess this is OK?