Add Jump to Previous Recording to OSD menu

[kuphal@…]

This patch adds a feature that I've long missed from my ReplayTV. If you watch a recorded program from Watch Recordings and then exit that recording and watch a second program, a menu item will appear on the OSD menu that will allow you to jump back to your bookmark position in the previously watched recording and so on. The bookmark is automatically saved when jumping back and forth.

I find this useful when I'm watching perhaps a movie, my wife comes home and wants to watch something else, and then gets up to get food or whatever. I can then jump quickly back to what I was watching and back again when she returns. She also does the same to me :)

If the recording you were previously watching is deleted and you try to jump to it, it should exit gracefully back to the watch recordings screen (at least it did for me). The menu item will not appear if you have only watched one recording as you have nothing to jump to.

[Isaac Richards]

(In [7078]) Kevin Kuphal's patch to add a 'Jump to Previous Recording' in the OSD menu.

Closes #146.

[anonymous]

This is handy but (a) frustrating that it appears before the "Edit Recording" item which I (still) use more frequently, and (b) the text is too long, it should say just "Previous Recording".

[Isaac Richards]

(In [7137]) Re-arrange osd playback menu slightly. Closes #146 - I agree with the comments.