custom sounds during checkin

[Jason Etheridge]

collab/phasefx/sound_of_checkin @ working/Evergreen.git
http://git.evergreen-ils.org/?p=working/Evergreen.git;a=commit;h=1b750403fec6c55b283f1ccb4da1197dcaf82452

more sound hooks during check-in for transits, holds, etc.

Adds util.sound.special which can be used like this:

    util.sound.special('foo');

and looks for a URL constant matching this:

    urls['AUDIO_special_foo']

Also give util.sound a more programmable delay via custom.js:

    var _sound_delay_interval = 50000;

Here are the new hooks for check-in and how you might use them:

    urls['AUDIO_special_checkin.cataloging'] = '/xul/server/skin/media/custom/cataloging.wav';
    urls['AUDIO_special_checkin.error'] = '/xul/server/skin/media/custom/error.wav';
    urls['AUDIO_special_checkin.hold_capture_delayed'] = '/xul/server/skin/media/custom/hold_capture_delayed.wav';
    urls['AUDIO_special_checkin.hold_shelf'] = '/xul/server/skin/media/custom/hold_shelf.wav';
    urls['AUDIO_special_checkin.no_change'] = '/xul/server/skin/media/custom/no_change.wav';
    urls['AUDIO_special_checkin.not_found'] = '/xul/server/skin/media/custom/not_found.wav';
    urls['AUDIO_special_checkin.reservation_shelf'] = '/xul/server/skin/media/custom/reservation_shelf.wav';
    urls['AUDIO_special_checkin.success'] = '/xul/server/skin/media/custom/success.wav';
    urls['AUDIO_special_checkin.transit'] = '/xul/server/skin/media/custom/transit.wav';
    urls['AUDIO_special_checkin.transit_for_hold'] = '/xul/server/skin/media/custom/transit_for_hold.wav';

[Lebbeous Fogle-Weekley (lebbeous)]

Signed off and pushed to master. Assuming we won't backport this, as it's a new feature.