Included ib.sym package in setup.
Included ib.sym package in setup.

git-svn-id: 56291ccb70fbcdaeccc27a45ace48359e35ec6f1@305 3e6b72d3-b629-0410-ad1b-3b4ab856adc4

jamesblunt/IbPy,chris-ch/IbPy,humdings/IbPy,sjev/ibpy,blampe/IbPy,chenzeyu/IbPy