V1.6.2

Fixes minor bugs and manage correctly generated emf extensions.

Fix #56 : generated package must be defined only once for the same model URI
Fix #55 : factory override must be defined only once for the same URI
Fix #54 : In eSet cast for enum are not managed
Fix #53 : package name's case must not be changed for dev generation
Fix #52 : Exception in getModelPath for my project
Fix #51 : The dev package and factory names should use the Prefix name to be computed !
Fix #50 : setRelevantValues should also set relevant values for 'src' patterns !
Fix #47 : Check the templates/model/Class.javajet
Fix #46 : project name is 'resource' when genmodel URI is 'platform:/resource/....'
Fix #43 : Remove trace during emf generation