* config/mips/tm-mips.h (GDB_TARGET_IS_MIPS64): If not already

	* config/mips/tm-mips.h (GDB_TARGET_IS_MIPS64): If not already
	defined, define as 0.
	(FIX_CALL_DUMMY): Rewrite to remove presumption that host and
	target are similar.
	* config/mips/tm-idt.h (TARGET_BYTE_ORDER_SELECTABLE): Define.
	* config/mips/tm-idtl.h (TARGET_BYTE_ORDER_SELECTABLE): Define.
	* config/mips/tm-idt64.h (TARGET_BYTE_ORDER_SELECTABLE): Define.
	(BREAKPOINT): Remove definition.
	* config/mips/tm-idtl64.h (TARGET_BYTE_ORDER_SELECTABLE): Define.
	(BREAKPOINT): Remove definition.
	* config/mips/tm-mips64.h (GDB_TARGET_IS_MIPS64): Define with a
	value of 1, rather than without a value.
	* config/mips/tm-bigmips64.h (GDB_TARGET_IS_MIPS64): Likewise.