TorrentRegexSearchPerformer now provides methods to do regex scans on a smaller portion of the HTML being parsed with prefixOffset() and suffixOffset() methods. This will prevent a search performer from lingering on backtracks in case the REGEX_HTML is outdated, we've applied it on the TorrentsFmSearchPerformer only, TODO: The rest of Regex search performers.
Cleanup.
Split 'common/' into commit '0954208eba1a96ee6385ec0787ea3533195793c4'

git-subtree-dir: common
git-subtree-mainline: 12a6c88345565e80b697f3c6a009a583c9935982
git-subtree-split: 0954208eba1a96ee6385ec0787ea3533195793c4