Base source diff is available here - http://wolfmame.marpirc.net/wolf146.zip
Input viewer is not updated yet (accursed Aaron core rewrites ), and will build a win32 binary once that is done.
You can build your own version now if you're that impatient (and so inclined).
MAME 0.146 or MESS 0.146 source
+
patch -p1 < wolf146.diff
+
make TARGET=mame
=
freshly built WolfMAME binary