bt-load.c (add_btr_def, [...]): Avoid C++ keywords.

bt-load.c (add_btr_def, [...]): Avoid C++ keywords.

	* bt-load.c (add_btr_def, migrate_btr_def,
	branch_target_load_optimize): Avoid C++ keywords.
	* caller-save.c (insert_restore, insert_save, insert_one_insn):
	Likewise.
	* combine.c (subst, simplify_set, make_extraction,
	make_compound_operation, known_cond, simplify_shift_const_1):
	Likewise.
	* cse.c (make_regs_eqv, merge_equiv_classes, validate_canon_reg,
	fold_rtx, equiv_constant, cse_insn, cse_process_notes_1):
	Likewise.

From-SVN: r137847