added util class

Change-Id: I506065998915f13e7dacfddc32598c398c024fac
clean xtend-gen dir as the first step

Change-Id: Iace5b8f847cd8c40f762eb11b4a56ef6123e51bb
label provider depends on an xtend class in the runtime plugin

Change-Id: I0773c98a7608f9e960ded689a28f0782ca8d39f7
compile xtend files in separate steps

Change-Id: I75f6cb4a673a144d3a7e94079c7da2e1dd724201
suppress warnings in src-gen dir

Change-Id: Ied5254059db94d9b2299039c4a10721fbf9b2b62