PR c++/4401
	* c-common.c (pointer_int_sum): Moved from...
	* c-typeck.c (pointer_int_sum): ...here.
	* c-common.h (pointer_int_sum): Add prototype.

	* typeck.c (cp_pointer_int_sum): Renamed from
	pointer_int_sum, call pointer_int_sum.

	* g++.dg/opt/ptrintsum1.C: New test.

From-SVN: r49916