added C-l to launch subcomposer- in progress
keyboardcomposer will probably launch subcomposer correctly,
but i don't even know if KC blocks or not (untested), and
the SC is certainly a child process of the KC, which is
undesirable. We think that some sort of setpgrp call in
the child may fix that.

leave in a comment about how to offset the audio time in case your sound card is lying
we didn't eventually need this because we found a good-sounding card
that could report offset correctly. But if you're stuck with a card
that reports offset incorrectly, you can play with this offset for
a partial workaround. note that song intros will probably still be
corrupted (but you could workaround that by prepending some silence)

chase logic is (mostly) fixed, integrate with curvecalc
Also add some quick names for chases

Basic chase logic (does not do bounces correctly)
Plus a tiny bit of testing code

Move general use gyro function get_sub to Submaster, make global Submasters object
- gyro's error subs now look like normal subs since they might reload and turn
into good subs.
- Also, add Submaster.fullsub which helps you make subs from channel names.

refactoring and little fixes in curvecalc and keyboardcomposer
font change in KC, cleanup of CC's main section, maybe some little
fixes that i can't remember because darcs doesn't show the changes
at the same time i'm writing this message

Submaster objects listen for a signal to reload, curvecalc can broadcast it
Also, an easter egg change: "Something I shoulda done a long time ago!"

curvecalc exprs can return a whole Submaster now
subterms will be ignored -- we only use the Submaster in this case

gyrocontroller: remap buttons, fix keep mode
Also, solo mode is now default, colors are brighter, numeric names for subs
are converted to subs with only that channel up, send zeroes when exiting

keyboardcomposer destroy fix and cleanups
- We were destroying KeyboardComposer a little too much. Fortunately,
we weren't passing the right number of arguments, so this was merely
an error.
- About the TODO comment removed: we don't need to use combine_dict
since Submaster logic will be changed entirely when we/if we move
to a SubServer world and keyboard composer will not be the wiser.

dmxclient has better clientids, cleanups
- clientids include hostname, strip path prefixes
- twisted is imported on demand

TkGyro: read subs from argv or stdin, cleanups
Some documentation and code reorganization/cleanups

TkGyro: "disable" text so it gets no events now
This fixes one of the bugs mentioned in the last TkGyro patch.

TkGyro added to gyrocontroller, seems mostly functional
Some bugs that still need to be fixed:
- It refuses to go full screen on my machine.
- Text in the middle can catch some events, we'd like it to pass them to
the rectangles under it.

SubClient created, keyboardcomposer and gyrocontroller use it now
Plus some minor cleanups in keyboardcomposer and gyrocontroller