Updating Eclipse to handle scala 2.10
Updated ant tests to use updated jars
Regression tests need to know where to find ducttape
Allow regression tests to run even in the absence of the internet
Changing agenda from a linked list FIFO queue to a priority queue

Still need to allow the user to select the type of traversal comparator
to be used for ordering the agenda
Allow user-specified traversal algorithm - closes #97

Previously, an arbitrary traversal algorithm was used.

Now, users can choose from Arbitrary, BreadthFirst, DepthFirst

DepthFirst is the default
Merge branch 'v0.3' of www:/repos/git/Workflow/ducttape into v0.3