[Fluxus] some commits

[gabor papp]

hi dave,

> * fix for building video addons (added libavformat)
i think the main SConstruct add is not needed, isn't it?
http://git.savannah.gnu.org/cgit/fluxus.git/diff/SConstruct?id=870a81023a5649ec134e7d03645d0b8acb9e3a69
otherwise it won't compile in osx.

> * osc now supports 64bit integers
i get this:
modules/fluxus-osc/src/OSCServer.cpp:153: warning: conversion lacks type
at end of format
modules/fluxus-osc/src/OSCServer.cpp:153: warning: too many arguments
for format

it might be because "%l" is used instead of "%ld"?

best,
gabor