[mythtv] Sort by programid bug

[Bruce Markey]

> mythtv/programs/mythfrontend/playbackbox.cpp
> John Poet's patch to allow sorting of episodes by programid
> instead of recording date.

John, sorry I didn't look at this before it went in but in
playing with it now, I've found a significant bug. After
playing a file then exiting playback, it does not find it's
matching item in the list and the selection highlight seems
to always fall to the last item on the list.

I think what needs to be addressed is in the section starting
around line 1234:

    // Try to find our old place in the title list.  Scan the new
    // titles backwards until we find where we were or go past.  This
    // is somewhat inefficient, but it works.

    QString oldsTitle = oldtitle;
    oldsTitle.remove(prefixes);
    titleIndex = titleList.count() - 1;
    for (int i = titleIndex; i >= 0; i--)
    {

        sTitle = titleList[i];
        sTitle.remove(prefixes);

        if (oldsTitle > sTitle)
            break;

        titleIndex = i;

        if (oldsTitle == sTitle)
            break;
    }

This loop is geared to match a list sorted by title but you need
some sort of "if (episodeSort == "Id")" variation that loops
over programid. This means that you'll probably need some sort
of programidList also.

--  bjm