Merge pull request #293 from sotty/master

[BZ 1034359] Trait serialization
BZ-952930 - Verifier: Analysis doesn't detect equivalent rules
DROOLS-360: Incremental compilation: Flawed for Rule Templates
[DROOLS-361] make incremental compilation to automatically calculate the list of modified files
[DROOLS-360] fix incremental compilation for rule templates
BZ-1009385 - Invalid Guided Rule reopens with a different definition
[DROOLS-363] make incremental compilation to work with declared types
BZ-1036020 - Guided rule editor can not load a rule that contains Company( employees.size() == 0 )
[BZ-1036020] fix DRL unmarshalling when accessing a field using parenthesis
BZ-1038214: adding support to import accumulate in order to allow users to plug custom accumulate functions in Drools 6
1038385 - Correlation key serialization is not unmarshalling composite
keys correctly
[DROOLS-363] Test Case