Replaced a bunch of println statements by logging.


git-svn-id: http://gapt.googlecode.com/svn/trunk/source@2370 85d21ef8-add0-11de-ae77-5bfb9c5a3f34
Added HOL quantifier blocks for convenience. 


git-svn-id: http://gapt.googlecode.com/svn/trunk/source@2371 85d21ef8-add0-11de-ae77-5bfb9c5a3f34
fixed toString method, which returned a wrong string representation for grammar decompositions with >= 2 non-terminals

git-svn-id: http://gapt.googlecode.com/svn/trunk/source@2372 85d21ef8-add0-11de-ae77-5bfb9c5a3f34