Use nframes_t for timestamps of real (jack) time MIDI events (i.e. in MidiBuffer and MidiRingBuffer).

Use iterator interface of Sequence to read events in a MIDISource rather than Sequence::read, avoiding timestamp confusion.
Disable no longer useful Sequence::read.


git-svn-id: svn://localhost/ardour2/branches/3.0@4570 d708f5d6-7413-0410-9779-e7cbd77b26cf

libs/evoral/src/Event.cpp

@@ -68,6 +68,7 @@ Event<Timestamp>::~Event() {
 #endif // EVORAL_EVENT_ALLOC
 
 template class Event<double>;
+template class Event<uint32_t>;
 
 } // namespace Evoral