Original commit message from CVS:
* docs/design/Makefile.am:
* docs/design/part-synchronisation.txt:
Add doc about synchronisation
* docs/design/draft-latency.txt:
* docs/design/part-TODO.txt:
* docs/design/part-clocks.txt:
* docs/design/part-events.txt:
* docs/design/part-gstbus.txt:
* docs/design/part-gstpipeline.txt:
* docs/design/part-live-source.txt:
* docs/design/part-messages.txt:
* docs/design/part-overview.txt:
* docs/design/part-streams.txt:
* docs/design/part-trickmodes.txt:
Documentation updates.