[CM] 64bit version of OM for Linux

[anders.vinjar at bek.no]

Worth to mention also, OM6.12 has been available as 64-bit builds for
Linux since around february.

Amongst other important changes is a new Juce-based Audio i/o.  Plus
piles of bug-fixes and enhancements.

RPMs and DEBs, plus a tarball (using that you don't need to install
anything apart from the fonts package), are available at

 http://repmus.ircam.fr/openmusic/linux

-anders