Switch md5 over to openssl rather than libc.

It doesn't make any sense for the C library to contain private stuff
that's only used by toolbox. Rather than move that stuff out of bionic
and into here, let's just use the same MD5 implementation the rest of
the system's using.

Change-Id: Ia1c73164124094b532af3453b90c4bd1ebfdaa24
2 files changed