change Control::{set,get}_float to Control::{set,get}_double and make almost all Control-related stuff use double rather than random mixtures of float, double and some integer value ; make hans' program change stuff work quite a bit better (not finished yet) including keyboard edting of pgm change values

git-svn-id: svn://localhost/ardour2/branches/3.0@7514 d708f5d6-7413-0410-9779-e7cbd77b26cf

libs/evoral/src/Sequence.cpp

@@ -693,7 +693,6 @@ Sequence<Time>::append(const Event<Time>& event, event_id_t evid)
                 return;
         }
 
-
         if (ev.is_note_on()) {
                 NotePtr note(new Note<Time>(ev.channel(), ev.time(), 0, ev.note(), ev.velocity()));
                 append_note_on_unlocked (note, evid);