gcc/

gcc/
	* dbgcnt.c (dbg_cnt_process_single_pair): constify.
	* opts.c (common_handle_option): constify.
gcc/cp/
	* repo.c (extract_string, get_base_filename, init_repo): constify.
libcpp/
	* directives.c (cpp_define): constify.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@151661 138bc75d-0d04-0410-961f-82ee72b054a4