i386-protos.h (ix86_can_use_return_insn_p, [...]): Change function prototype to bool.

i386-protos.h (ix86_can_use_return_insn_p, [...]): Change function prototype to bool.

	* config/i386/i386-protos.h (ix86_can_use_return_insn_p,
	symbolic_reference_mentioned_p, ix86_expand_movmem, ix86_expand_setmem,
	ix86_expand_strlen, legitimate_pic_address_disp_p,
	ix86_binary_operator_ok, ix86_unary_operator_ok, ix86_match_ccmode,
	ix86_expand_int_movcc, ix86_expand_fp_movcc, ix86_expand_int_addcc,
	ix86_check_movabs, ix86_secondary_memory_needed): Change function
	prototype to bool.
	* config/i386/i386.c (return_in_memory_32, return_in_memory_64,
	return_in_memory_ms_64, ix86_check_movabs,
	symbolic_reference_mentioned_p, ix86_can_use_return_insn_p,
	legitimate_pic_address_disp_p, ix86_binary_operator_ok,
	ix86_unary_operator_ok, ix86_match_ccmode, ix86_expand_int_movcc,
	ix86_expand_fp_movcc, ix86_expand_int_addcc, ix86_expand_movmem,
	ix86_expand_setmem, ix86_expand_strlen, inline_secondary_memory_needed,
	ix86_secondary_memory_needed): Change to bool.  Return
	true and false values.
	* config/i386/i386.md: Return true and false values.

From-SVN: r164013