Fixup unaligned bwx instructions (ldwu, stw).  This may fix some mysterious natd sigbus errors being reported on the freebsd-alpha@ mailing list.
Fixup unaligned bwx instructions (ldwu, stw).  This may fix some mysterious
natd sigbus errors being reported on the freebsd-alpha@ mailing list.

Obtained from: NetBSD

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase