Merge pull request #1 from DF1E/master

A few changes by DF1E.
Shell now uses md5sum to check against output termination to minimize the risk of misinterpretation the actual output with termination line.
Remove excessive logging.
SequentalTextView is now not final. Added some null checkings.
Search results dialog now doesn't ask for second search with superuser access.
ActionMode is now working in SearchActivity.
Merge remote-tracking branch 'upstream/master'