* tree-ssa-structalias.c (ipa_pta_execute): Rename 'cfun' to
	'func'. 
	* tree-parloops.c (create_loop_fn): Use set_cfun.
	* gengtype.c (open_base_files): Emit #undef cfun.
	* ipa-struct-reorg.c (do_reorg_1): Use set_cfun.
	* function.h (cfun): New define.
	* function.c: Undefine cfun.

From-SVN: r130213