VST3 host fixes + refactoring.
Fixed a leak in AU hosting.
Refactored some TextEditor allocation.
Avoided a few compiler warnings in the plugin build.
Fix for accuracy in AnimatedPositionBehaviours
Added some selection accessors to CodeEditorComponent
Added a copy constructor for DynamicObject
Made 'paste' menu item available in text editors with a password field.
Added a DynamicObject::cloneAllProperties() method.
Clarified some docs for the ActiveX plugin build.
Added safety checks to avoid problems when windows VSTs are closed by a hooked keypress.
Removed references to a VST3 symbol that seems to be missing from some versions of the SDK.
(fixed mistake in last commit)
Merge remote-tracking branch 'upstream/master' into temp