Merge pull request #1 from p2t2/DEV2.1

Dev2.1
Lazy factored inference v1
Lazy factored inference attempt 2
Lazy factored inference
Merge pull request #90 from apfeffer/DEV2.1

Dev2.1
Adding back distribution build script and removing Eclipse files
Merge remote-tracking branch 'upstream/DEV2.1' into DEV2.1
BP merged with lazy factors