* Makefile.in (mips-tdep.o): Update.

	* mips-tdep.c (struct register_alias, mips_o32_aliases)
	(mips_n32_n64_aliases, mips_register_aliases): New.
	(mips_register_name): Call tdesc_register_name.
	(mips_tdesc_register_reggroup_p): New.
	(mips_pseudo_register_type, value_of_mips_user_reg): New.
	(mips_gdbarch_init): Add target-described register support.
	Register aliases for register names.
	* target-descriptions.c (tdesc_register_name): Make global.
	(tdesc_register_in_reggroup_p): New function, broken out from
	tdesc_register_reggroup_p.
	(tdesc_register_reggroup_p): Use it.
	* target-descriptions.h (tdesc_register_name)
	(tdesc_register_in_reggroup_p): New prototypes.
	* NEWS: Correct formatting.  Mention MIPS register support.
	* features/mips-cp0.xml, features/mips-fpu.xml,
	features/mips64-cp0.xml, gdb/features/mips64-fpu.xml, mips-cpu.xml,
	features/mips64-cpu.xml: New files.

	* gdb.xml/tdesc-regs.exp: Add MIPS support.  Allow multiple
	required features to be included.

	* gdb.texinfo (MIPS Features): New subsection.