Subtitle parsing for RTL Group EIT

[l-case@…]

This is a patch wich parse the description and finds the subtitle's if available. Patch was made with help from Janne

[Stuart Auchterlonie]

(In [12139]) Closes #2745. Adds EIT fixup for RTL Group DVB by applying slightly modified version of the patch.

Thanks to l-case at gmx dot net for the original patch.

[Stuart Auchterlonie]

(In [12141]) Refs #2745. The conversion of fixup from unsigned char to uint32_t is important.

[Janne <janne-mythtv@…>]

the commited fixup has way too much false positives. The 2745_non_fuzzy.diff implements subtitle extraction based on regular expressions for episode numbers or quoted subtitles. It works well for VOX and Super RTL but not only on a few RTL and RTL2 programs.
I think unprocessed descriptions are less disturbing than false positive. I can't see a good way to avoid false positives for RTL and RTL2. The best approach I can think of atm is program length > 20 and < 65 minutes and number of words in the first sentence at most 3 or 4.

[Janne <janne-mythtv@…>]

2745_non_fuzzy.diff is based on another patch from l-case at gmx dot net

[Stuart Auchterlonie]

(In [12247]) Refs #2745. Updates to the RTL fixups from Janne and l-case at gmx dot net