Signal stack support for MIPS ____longjmp_chk.

	* sysdeps/mips/____longjmp_chk.c: Remove.  Replaced by....
	* sysdeps/unix/sysv/linux/mips/____longjmp_chk.c: This.  New file.
	* sysdeps/mips/__longjmp.c (__longjmp): Use explicit register
	variable for env.  Use expansion of CHECK_SP macro for check.
	* sysdeps/mips/mips64/__longjmp.c (__Longjmp): Likewise.
5 files changed