Merge pull request #62 from morevnaproject/master

OSX and Linux compatibility fixes
Fix : [0.64.1 Dev] Convert to bones influence : crash !

Genete fix for "[0.64.1 Dev] Convert to bones influence : crash !"
Merge pull request #63 from d-j-a-y/patch-1

Fix : [0.64.1 Dev] Convert to bones influence : crash !
Revert workaround introduced in 6444ec06052bad0efd2f85e75b9c966bc38bdd83
Fix ValueNode_Random::clone. Still crashes later inside of Layer::connect_dynamic_param().
Change ValueNode::clone() return type - use ValueNode::Handle instead of pointer
Fix another crash related with pointers usage. Now #482 should be fixed.

See http://www.synfig.org/issues/thebuggenie/synfig/issues/482