* config/rl78/cmpsi2.S: Use function start and end macros.
	(__gcc_bcmp): New function.
	* config/rl78/lshrsi3.S: Use function start and end macros.
	* config/rl78/mulsi3.S: Add support for G10.
	(__mulqi3): New function for G10.
	* config/rl78/signbit.S: Use function start and end macros.
	* config/rl78/t-rl78 (LIB2ADD): Add bit-count.S, fpbit-sf.S and
	fpmath-sf.S.
	(LIB2FUNCS_EXCLUDE): Define.
	(LIB2FUNCS_ST): Define.
	* config/rl78/trampoline.S: Use function start and end macros.
	* config/rl78/vregs.h (START_FUNC): New macro.
	(START_ANOTHER_FUNC): New macro.
	(END_FUNC): New macro.
	(END_ANOTHER_FUNC): New macro.
	* config/rl78/bit-count.S: New file.  Contains assembler
	implementations of the bit counting functions: ___clzhi2,
	__clzsi2, ctzhi2, ctzsi2, ffshi2, ffssi2, __partityhi2,
	__paritysi2, __popcounthi2 and __popcountsi2.
	* config/rl78/fpbit-sf.S: New file.  Contains assembler
	implementationas of the math functions: __negsf2, __cmpsf2,
	__eqsf2, __nesf2, __lesf2, __ltsf2, __gesf2, gtsf2, __unordsf2,
	__fixsfsi,  __fixunssfsi, __floatsisf and __floatunssisf.
	* config/rl78/fpmath-sf.S: New file.  Contains assembler
	implementations of the math functions: __subsf3, __addsf3,
	__mulsf3 and __divsf3

From-SVN: r220162