xbmc/xbmc — pull request #1973 by nemphys (2012-12-22 12:45:15+00:00)
Title: pvr: do not call sortandrenumber after adding every single channel to dummy...

... (temporary) internal channel groups from clients; speeds up channel groups import from clients.

I actually kept the call to sortandrenumber, but it's called only once after all channels have been added to the dummy group. I suppose it can be excluded completely, but was not sure so I kept it like that.

A new channel group boolean property "is Dummy" is used to implement this, which can be used for other speed optimizations, too.