* i386.h (DBX_REGISTER_NUMBER): Return proper values for 64bits.
	(dbx64_register_map): Declare.
	(RETURN_ADDR_RTX): Fix for 64bit.
	(DWARF_FRAME_RETURN_COLUMN): Set to 16 for 64bit.
	(INCOMING_FRAME_SP_OFFSET): Set to 8.
	* i386.c (dbx64_register_map): New global array.
	* beos-elf.h, freebsd.h, i386-interix.h, i386elf.h,
	linux.h (DBX_REGISTER_REGNUMBER): Use dbx64_register_map
	for 64bits.

From-SVN: r40365