* config/h8300/h8300.h (TARGET_H8300H, TARGET_H8300S): Make sure

	* config/h8300/h8300.h (TARGET_H8300H, TARGET_H8300S): Make sure
	UNITS_PER_WORD and BITS_PER_WORD are compile time constants when
	compiling libgcc2.
	* config/mips/mips.h (TARGET_64BIT): Likewise.
	* config/rs6000/rs6000.h (TARGET_POWERPC64): Likewise.
	* libgcc2.c: Use {,U}{HW,W,DW}type and DWunion everywhere instead
	of {SI,DI}type and DIunion.  Define these types to QI/HI modes on
	dsps.  Give routines proper names if SI/DI modes are not used.
	* longlong.h: Use DWunion instead of DIunion.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@31095 138bc75d-0d04-0410-961f-82ee72b054a4