[auengine] Simplify
[laola1tv] Add new extractor

The extractor works fine, but the f4m downloader cannot handle the resulting bootstrap information.
[f4m] Support bootstrap URLs
[laola1tv] Mark as broken

When the f4m downloader gets live stream support, I expect this to work magically or with very minor changes.
Merge branch 'master' of github.com:rg3/youtube-dl
[niconico] Add extractor for playlists (closes #4043)
[test_utils] Fix compat_getenv and compat_expanduser tests on python 3.x
[trutube] Fix extraction
[naver] Capture and output error message (#4057)
[drtv] Allow fractional timestamps (Fixes #4059)
Merge branch 'master' of github.com:rg3/youtube-dl
[generic] Allow soundcloud embeds with additional attributes