use released Xtext 2.12.0

Change-Id: Iee9d9d19dd9c799afbb2962cdd48a00aada21905
diff --git a/devtools/org.eclipse.emf.parsley.oomph/EMFParsley.setup b/devtools/org.eclipse.emf.parsley.oomph/EMFParsley.setup
index cf3091d..0e0d4ea 100644
--- a/devtools/org.eclipse.emf.parsley.oomph/EMFParsley.setup
+++ b/devtools/org.eclipse.emf.parsley.oomph/EMFParsley.setup
@@ -778,11 +778,15 @@
       <setupTask
           xsi:type="setup:VariableTask"
           name="mwe2.site"
-          value="http://download.eclipse.org/modeling/emft/mwe/updates/releases/2.9.0"/>
+          value="http://download.eclipse.org/staging/oxygen/"/>
       <setupTask
           xsi:type="setup:VariableTask"
           name="xtext.site"
-          value="http://download.eclipse.org/modeling/tmf/xtext/updates/nightly/"/>
+          value="http://download.eclipse.org/staging/oxygen/"/>
+      <setupTask
+          xsi:type="setup:VariableTask"
+          name="orbit.site"
+          value="http://download.eclipse.org/tools/orbit/R-builds/R20170516192513/repository"/>
       <description>Branch for Simrel for Oxygen</description>
     </stream>
     <description>EMF Parsley version for RCP</description>
diff --git a/devtools/org.eclipse.emf.parsley.targetplatform/oxygen-staging.target b/devtools/org.eclipse.emf.parsley.targetplatform/oxygen-staging.target
index 0dacdfa..785f6f1 100644
--- a/devtools/org.eclipse.emf.parsley.targetplatform/oxygen-staging.target
+++ b/devtools/org.eclipse.emf.parsley.targetplatform/oxygen-staging.target
@@ -26,16 +26,13 @@
 <unit id="org.eclipse.swtbot.ide.feature.group" version="0.0.0"/>
 <unit id="org.eclipse.swtbot.eclipse.feature.group" version="0.0.0"/>
 <unit id="org.eclipse.swtbot.generator.feature.feature.group" version="0.0.0"/>
+<unit id="org.eclipse.xtext.sdk.feature.group" version="0.0.0"/>
 <repository location="http://download.eclipse.org/staging/oxygen/"/>
 </location>
 <location includeAllPlatforms="false" includeConfigurePhase="true" includeMode="planner" includeSource="true" type="InstallableUnit">
 <unit id="org.mockito" version="0.0.0"/>
 <unit id="org.hamcrest" version="0.0.0"/>
-<repository location="http://download.eclipse.org/tools/orbit/downloads/drops/R20160520211859/repository/"/>
-</location>
-<location includeAllPlatforms="false" includeConfigurePhase="true" includeMode="planner" includeSource="true" type="InstallableUnit">
-<unit id="org.eclipse.xtext.sdk.feature.group" version="0.0.0"/>
-<repository location="http://download.eclipse.org/modeling/tmf/xtext/updates/nightly/"/>
+<repository location="http://download.eclipse.org/tools/orbit/R-builds/R20170516192513/repository"/>
 </location>
 </locations>
 </target>
diff --git a/releng/org.eclipse.emf.parsley.parent/pom.xml b/releng/org.eclipse.emf.parsley.parent/pom.xml
index a0220d9..904a4d3 100644
--- a/releng/org.eclipse.emf.parsley.parent/pom.xml
+++ b/releng/org.eclipse.emf.parsley.parent/pom.xml
@@ -66,7 +66,7 @@
 		<findbugs-version>3.0.1</findbugs-version>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 
-		<xtext-version>2.12.0-SNAPSHOT</xtext-version>
+		<xtext-version>2.12.0</xtext-version>
 		<xtextVersion>${xtext-version}</xtextVersion>
 		<mwe2Version>[2.9.0,2.10)</mwe2Version>
 		<emf.version>(2.8,3.0)</emf.version>