* cccp.c: Do not #include <sys/stat.h> here; this is already done
	by "system.h".
	* collect2.c: Likewise.
	* cpplib.h: Likewise.
	* gcc.c: Likewise.
	* gcov.c: Likewise.
	* getpwd.c: Likewise.
	* protoize.c: Likewise.
	* toplev.c: Likewise.

From-SVN: r24262