made Xtend backwards compatible to Android Studio (Intellij 13)
zip intellij plugins instead of flat-jar
avoid index deadlocks with active annotations
catch OCE and invalid text regions
put issues without an offset at the start of the file
cleanup copy-pasted code
Fix build against Mars as the signature has been changed by JDT.
To make the impl work in Helios too the cast is needed.
The CoreException in only thrown in Mars.
don't exclude the old xtend on local builds

Change-Id: I61288dadfc63ab41f7a20f871afaf7779f243303
Merge "made Xtend backwards compatible to Android Studio (Intellij 13)"
Merge "zip intellij plugins instead of flat-jar"
Merge "avoid index deadlocks with active annotations"
Merge "catch OCE and invalid text regions"
Merge "put issues without an offset at the start of the file"
Merge "cleanup copy-pasted code"
Merge "don't exclude the old xtend on local builds"
[osgi] Added uses derectives to reduce the risk of type mismatches

Change-Id: Ie629e3a7af3c9217b37670869f0c31a3eed646bb
Merge "Fix build against Mars as the signature has been changed by JDT. To make the impl work in Helios too the cast is needed. The CoreException in only thrown in Mars."