Generate the list of IEs automatically

It seems like GenericIE needs to be last, but other than that, the order really does not matter anymore.
To cut down on merge conflicts, generate the list of IEs automatically.
[soundcloud] Move tests
[metacafe] move tests
[steam] move test
[eighttracks] move test
[youku] move tests
Remove superfluous name declarations
[infoq] move tests
[googleplus] move tests
Tests: Add coding to files
Move tests to the IE definitions
Merge branch 'master' of github.com:rg3/youtube-dl
Credit @gitprojs for auengine
release 2013.06.34.2
Make sure SoundcloudIE does not match soundcloud sets
Move testcase generator to helper
[tumblr] Fix title
Make sure that IEs only accept their own URLs
Merge branch 'generate-ie-list'
Add function add_default_info_extractors to YoutubeDL

It adds to the list the ies returned by ge_extractors