Fix recorded markup handling in python3 bindings

[rcrdnalor]

With python3, the following methods of the Python Bindings return now a generator, in opposite to python2, where they return a list:

Recorded.markup.getskiplist()
Recorded.markup.getunskiplist()
Recorded.markup.getcutlist()
Recorded.markup.getuncutlist()

This will break almost all home-made transcoding scripts, once called with python3. Found during debugging of #13562.

Luckily, this is easy to fix, patch attached. It works for python2 and python3 as well.

Without the patch:

$ python3
Python 3.6.9 (default, Nov  7 2019, 10:44:02) 
>>> from MythTV import MythDB, Recorded
>>> db = MythDB()
>>> rec = Recorded((3002,20200120201100), db = db)
>>> rec.markup.getcutlist()
<zip object at 0x7f63ee572d88>       <--- this is the generator
>>> list(rec.markup.getcutlist())
[(0, 13204), (159325, 9999999)]
>>> 

With patch:

$ python3
Python 3.6.9 (default, Nov  7 2019, 10:44:02) 
>>> from MythTV import MythDB, Recorded
>>> db = MythDB()
>>> rec = Recorded((3002,20200120201100), db = db)
>>> rec.markup.getcutlist()
[(0, 13204), (159325, 9999999)]
>>> 

[rcrdnalor]

Patcg to fix recorded markup handling in python3 bindings

[Roland Ernst <rcrernst@…>]

In 20827d1bc/mythtv:

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[Roland Ernst <rcrernst@…>]

In 9337b830c/mythtv:

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