Original commit message from CVS:
Move plugin example code to new location, and put it into build system.
Add work on firstplugin chapter of pwg.
Fix typo in quotes.
Add @'s before commands in manuals.mak
Original commit message from CVS:
Add a "quotes" section to the gstreamer manual.
This may not be an appropriate place to have this - feel free to remove
it. But I think this should live _somewhere_.