Use the target platform only

Change-Id: Idab3e6f662aa35503f94b6e673cb8de2fb64830d
use target instead of tasks in maven ant plugin

tasks is deprecated

Change-Id: Ic38494934edd7f249403cf8f3022a6645443aa35
deal with Windows eol in tests

Change-Id: I215d047d209b5bae01455cb5b55b186d748e8b6a
Port to Xtext 2.6.0

Change-Id: If7c77a38a698dcebcbf4778d635c8beca7a5a6aa