[PATCH 0/3] Remove dangling pieces of old digest/hash implementation

Hello world,

This series removes several unused bits of code associated with the legacy
digest/hash implementation.  It also fixes one bug: out-of-tree algorithm
implementations which still use the legacy interface will build
successfully against 2.6.32-rc but oops when they are loaded.  Patch 3/3
causes such modules to FTBFS instead.

Compile-tested with allmodconfig.

--Benjamin Gilbert