[Patch ARM] Backport fix for gnu_unique_object to 4.7 branch

Hi,

Taking Richi's statement here
http://gcc.gnu.org/ml/gcc-patches/2012-06/msg01399.html as an approval
- I've backported the comment character fix for gnu_unique_object on
ARM to the FSF 4.7 branch.

regards,
Ramana

2012-06-29  Ramana Radhakrishnan  <ramana.radhakrishnan <at> linaro.org>

	* configure: Regenerate.
	Backport from mainline.
        2012-03-15  Ramana Radhakrishnan  <ramana.radhakrishnan <at> linaro.org>
	* config.gcc (target_type_format_char): New. Document it. Set it for
	arm*-*-* .
	* configure.ac (gnu_unique_option): Use target_type_format_char
	in test.  Comment rationale.

Index: gcc/configure
===================================================================
--- gcc/configure	(revision 189069)
+++ gcc/configure	(revision 189071)
 <at>  <at>  -26179,7 +26179,7  <at>  <at> 
   then gcc_cv_as_gnu_unique_object=yes
 fi
   elif test x$gcc_cv_as != x; then
-    $as_echo '.type foo,  <at> gnu_unique_object' > conftest.s