[PATCH] Add function to parse an object of unspecified type (take 2)

[PATCH] Add function to parse an object of unspecified type (take 2)

This adds a function that parses an object from the database when we have
to look up its actual type. It also checks the hash of the file, due to
its heritage as part of fsck-cache.

Signed-Off-By: Daniel Barkalow <barkalow@iabervon.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>