Roll-mode support

git-svn-id: svn://svn.code.sf.net/p/openhantek/code/trunk@66 274d4831-50e0-4fa7-bb7f-c62fc165ef04
Add libbfd dependencies

git-svn-id: svn://svn.code.sf.net/p/openhantek/code/trunk@67 274d4831-50e0-4fa7-bb7f-c62fc165ef04
Documentation fix

git-svn-id: svn://svn.code.sf.net/p/openhantek/code/trunk@68 274d4831-50e0-4fa7-bb7f-c62fc165ef04
DsoControl improvements

git-svn-id: svn://svn.code.sf.net/p/openhantek/code/trunk@69 274d4831-50e0-4fa7-bb7f-c62fc165ef04