I also found this article http://www.realclearpolitics.com/news/a ... ssion.html
In this it states that
Let's hope that this could allow campus carry to be put up as a stand alone bill!Dewhurst said he was ready to do away with the Senate's tradition of requiring a two-thirds vote to approve bills in the special session, which is meant to give even the minority party a say in legislation. The lieutenant governor presides over the Senate and he can choose not to recognize the unwritten rule in a special session.