Revert "MIKMIDIObject's name property is now publicly readwrite."

This reverts commit 13f17099aa8f55ca18e4b50aea40a1f7d25633fd.
Merge branch 'refs/heads/master' into VirtualEndpoints
Made MIKMIDIObject's name property publicly readwrite. (On the right branch this time).
Added -[MIKMIDIEndpoint isPrivate]
Fixed bug in -[MIKMIDIDeviceManager removeInternalVirtualDestinationsObject:]
Issue #6: MIKMIDIDeviceManager's virtualSources and virtualDestinations properties emit KVO notifications, and NSNotifications are posted when virtual endpoints' private status changes.
Added some minor code useful for debugging to MIDI Testbed app delegate.
Issue #6: MIKMIDIDeviceManager's virtual sources are updated in response to endpoints being added and removed.
Merge branch 'refs/heads/master' into VirtualEndpoints

Conflicts:
	Examples/MIDI Testbed/Sources/MIKAppDelegate.m
	Source/MIKMIDIEndpoint.m
	Source/MIKMIDIObject.m