update signature decoding function

- small perl script to generate perl from yt-dl.org's python code
- update signature decoding function, generated with above script
- convert CR+LF to LF in one regress file
- new regress test which connects to youtube, test enabled via env var
drop signature regression test
more CR+LF to LF conversions
sync with youtube-dl again
sync with youtube-dl 2013.09.24.2
fix signature 84
fix for signature 83
it's better to use youtube-dl's print signature code option
update for signature 82
signature 82 changed again
signature 86
whitespace fix
Merge pull request #21 from kucharskim/master

update signature decoding function