config.gcc (sh-*): Add sh-mem.o to extra_obj.

2013-10-25  Christian Bruel  <christian.bruel@st.com>

	* config.gcc (sh-*): Add sh-mem.o to extra_obj.
	* gcc/config/sh/t-sh (sh-mem.o): New rule.
	* gcc/config/sh/sh-mem.cc (expand_block_move): Moved here.
	(sh4_expand_cmpstr): New function.
	* gcc/config/sh/sh.c (force_into, expand_block_move): Move to sh-mem.cc
	* gcc/config/sh/sh-protos.h (sh4_expand_cmpstr): Declare.
	* gcc/config/sh/sh.md (cmpstrsi, cmpstr_t): New patterns.
	(rotlhi3_8): Rename.

From-SVN: r204013