Missing .cprestore warning

[Daniel Jacobowitz]

Gas will very nicely warn the user if we need to expand a MIPS cprestore
reference without having seen a .cprestore directive.  Once we've seen one,
though, it lasts the entire file.  Is there another logical place we could
reset this?  Perhaps in .end?  Otherwise a function missing .cprestore will
silently pick up the previous function's.

-- 
Daniel Jacobowitz                           Carnegie Mellon University
MontaVista Software                         Debian GNU/Linux Developer