When gcc for Arm is configured with --with-multilib-list=aprofile a 
misplaced endif directive in the makefile was causing the arm->thumb 
mapping for multilibs to be omitted from the reuse rules.  This resulted 
in the default multilib being picked rather than the thumb2 opimized 
version.

	* config/arm/t-multilib: Use arm->thumb multilib reuse rules
	on a-profile.

Committed to trunk.