SchedOpenEnd (OpenEnd) change to allow pre and post roll times

[James Hook <mythtv.hook@…>]

Attached is a small change to the existing SchedOpenEnd feature where instead of being a bool, it is an int which indicates if it should apply when the channels are different or even when the channels are the same.

This allows people who have multiple tuners available (eg. DVB) to keep the Pre and Post roll times on all recordings no matter if they occur on the same channel.

Default is still 0 (off), 1 is the current state (different channel), 2 is the new state (all channels)

I have not had a good look at how to change the settings GUI so currently the settings page will need to be updated.

This patch was created against SVN #23865 but as its simple should apply against most versions.

[James Hook <mythtv.hook@…>]

SchedOpenEnd for current channel patch (svn #23865)

[gigem]

(In [24475]) Extend the SchedOpenEnd feature to optionally avoid scheduling back-to-back programs on the same card even if they are on the same channel. Patch from James Hook. Closes #8429.