Fix the audio sequencer not being able to dragon-drop(tm) past the 12th lane.
Fix the audio sequencer not re-scaling correctly when entering a blank region.
A mixture of automated (and semi-automated) line-wrapping fixes to the
C code...
Add --track-origins=yes to the valgrind script
Memory error fixes and performance optimizations for the noise generator.

It turns out that there was an uninitialized memory error that had been there
since forever, but somehow missed every Valgrind session I'd ever run it
through...  The cause was tracked down by the previous commit adding the
--track-origins=yes switch to Valgrind...