[DROOLS-358] clone KieModule when starting a new incremental compilation
[DROOLS-361] make incremental compilation to automatically calculate the list of modified files
(cherry picked from commit 8040e5c1594a254d8e2141952ba87aa064891802)
[DROOLS-360] fix incremental compilation for rule templates
(cherry picked from commit ee256ec354b388aa56358cb82ec5eb103cf8977f)