vrp tw unit test + upgrade recipe for query IntConstraintOccurrence
(cherry picked from commit 45dc53eb20dd1f646aaeecbc196201e520422b9d)
solved dir: git ignore temporary files
(cherry picked from commit 6c535ed522180da72a4a2d5d811ff6f1f5977227)
pjs: initial scoreDrl attempt
(cherry picked from commit d08a4916c94de02010a50492db6995be4a8334c6)