Adjust configure machinery to abi32 targets

The machinery would still consider them as 64-bit targets in a few cases.

gcc/
	* acinclude.m4 (gcc_GAS_FLAGS): Set to --32 for abi32 targets.
	* configure.ac (TLS support): Use 32-bit sequence for abi32 targets.
	* configure: Regenerate.
3 files changed