hopefully improved libglew support due to unfortunately named libs that limit their flexible rollout across different versions of Ubuntu (and likely other distros as well)

updated moonlib to the latest version and made changes to mknob.c to support accelerated displacing with tag

Conflicts:
	pd/src/g_graph.c

implemented improvement for empty lists as suggested by IOhannes http://lists.puredata.info/pipermail/pd-list/2013-02/101518.html

improved logic for freeing rtext that alleviates memory leak but also does not crash abstractions and gop objects (there are still memory leaks apparent in l2ork_output~ external which may be linked to individual objects having incomplete free functions). See http://sourceforge.net/tracker/?func=detail&aid=3605235&group_id=55736&atid=478070 for more info

fixed memory leak (see https://sourceforge.net/tracker/?func=detail&aid=3605235&group_id=55736&atid=478070)

further refinements to the zoom algorithm involving gop subpatchers and their required opening when zooming to ensure proper displacement of components (abstractions are unaffected)