[commit] Generalize regcache_{save,restore}

[Andrew Cagney]

Hello,

The attached generalizes the regcache_save() and regcache_restore() 
methods by replacing the regcache SRC with an arbitrary buffer + 
cooked_read function.  This generic interface makes it possible for 
registers to be saved/restored using an arbitrary register source, even 
a frame:

	regcache_save (dst, frame_register_read, frame);

(ok, it needs a few wrapper methods to avoid -Werror).

commited,
Andrew
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