* config/mips/tm-mips.h (ADDR_BITS_REMOVE, TARGET_READ_SP): Define.

	* config/mips/tm-mips.h (ADDR_BITS_REMOVE, TARGET_READ_SP): Define.
	(mips_addr_bits_remove): Declare.
	* mips-tdep.c (mips_push_dummy_frame): Fix heuristic-fence-post
	errors when hitting breakpoints during inferior function calls
	in 64-bit programs.
	(fix_sign_extension): Make public, rename to mips_addr_bits_remove.
	* utils.c (paddr_nz, preg_nz): New functions, similar to
	paddr and preg but don't print leading zeroes.
	* defs.h (paddr_nz, preg_nz): Declare.
	* remote-mips.c: Use paddr_nz instead of paddr throughout
	to reduce packet size.
	(pmon_end_download): Improve timeout error handling.