[Midnightbsd-cvs] src: lib/libmport: Add sha256 hash function wrappers.

[laffer1 at midnightbsd.org]

Log Message:
-----------
Add sha256 hash function wrappers.  This allows us to verify a package file in the index was not tampered with and downloaded correctly.

Modified Files:
--------------
    src/lib/libmport:
        index.c (r1.9 -> r1.10)
        (http://cvsweb.midnightbsd.org/src/lib/libmport/index.c?r1=1.9&r2=1.10)
        mport.h (r1.17 -> r1.18)
        (http://cvsweb.midnightbsd.org/src/lib/libmport/mport.h?r1=1.17&r2=1.18)
        mport_private.h (r1.5 -> r1.6)
        (http://cvsweb.midnightbsd.org/src/lib/libmport/mport_private.h?r1=1.5&r2=1.6)
        util.c (r1.20 -> r1.21)
        (http://cvsweb.midnightbsd.org/src/lib/libmport/util.c?r1=1.20&r2=1.21)