420288: [EASE] Rename namespace from org.eclipse.escriptmonkey to
org.eclipse.ease
https://bugs.eclipse.org/bugs/show_bug.cgi?id=420288

423570: EASE shall not be Java 1.7 library dependent
https://bugs.eclipse.org/bugs/show_bug.cgi?id=423570
Update pom to use sam parent as EASE core