[pluggo] plugmultiparam Live 7.0.3 Screen update

Not sure this works, but to overcome different problems with
plugmultiparam, I made an abstraction called jr.pmp that uses a bunch of
pp's instead. Functionality of the jr.pmp should be more or less
identical to plugmultiparam.

Its part of jr.abstractions that can be downloaded from here: http://
sonicescape.net/maxmsp/

/Jakob