msp430.h (TARGET_CPU_CPP_BUILTINS): Define the name returned by msp430_mcu_name.

msp430.h (TARGET_CPU_CPP_BUILTINS): Define the name returned by msp430_mcu_name.

	* config/msp430/msp430.h (TARGET_CPU_CPP_BUILTINS): Define the
	name returned by msp430_mcu_name.
	(LIB_SPEC): If a -T option has not been specified then set a
	default, mcu-specific, linker script.
	* config/msp430/t-msp430 (MULTILIB_MATCHES): Add more mcu names.
	* config/msp430/msp430.c (msp430x_names): Likewise.
	Alpha sort the names for ease of comparison.
	(msp430_mcu_name): New function:  Returns a string suitable for
	use as a C preprocessor symbol based upon the name of the MCU
	being targeted.
	(msp430_option_override): Accept msp430x and msp430xv2 as generic
	mcu names.
	* config/msp430/msp430-protos.h (msp430_mcu_name): Prototype.

From-SVN: r204447