Rev 1.6 of alpha 0.2 release of ParaSail compiler and VM

Here is a new revision (rev 1.6) of the alpha 0.2 release of the ParaSail compiler and virtual machine

     http://bit.ly/tJyc5E

The big addition here is a new example, the "drinking philosophers" example (drinking_phils.psl).  This example is a variant on the classic "dining philosophers" example, and makes heavy use of timers and complex dequeue conditions.  A lot of changes under the hood, but no major new features.