Official screenpaste repository is now at bitbucket

As this repository is catcheable by autoget.py it is now its responsibility. Old 
repository on blacktrash.org is still up and contains just the same set of 
commits, but it is not mentioned in plugin description.
Remove a dead link
Add GoogleCodeMatch class, check for 404 in BitbucketMatch
Add MercurialMatch2 class for handling plugins like indexer.tar.gz

Author has mentioned his mercurial repository using

    Development mercurial repository: http://hg.dfrank.ru/vim/bundle/indexer_development

in description.
PyInteractive plugin got moved to github

Now it is allowed to be handled by autoget.py instead of using scmsources.vim 
since autoget.py does recheck on description changes. There will be more commits 
like this.
Add BitbucketSiteMatch matching on URLs like http://sjl.bitbucket.org/gundo.vim/
Make CodeGoogleMatch and BitbucketMatch delay checking what SCM they refer to
Add missing addon-info to abc-vim plugin
Remove a dead link
Filter out some files from expected, fix infinite recursion in CodeGoogleMatch
Add insignificant files to the message
Merge branch 'master' of ssh://github.com/MarcWeber/vim-addon-manager-known-repositories