Fixing export for verit.

git-svn-id: http://gapt.googlecode.com/svn/trunk/source@2327 85d21ef8-add0-11de-ae77-5bfb9c5a3f34
Added support for term positions to the HOL and lambda calculus layers.


git-svn-id: http://gapt.googlecode.com/svn/trunk/source@2328 85d21ef8-add0-11de-ae77-5bfb9c5a3f34