fix build problem

see https://bugs.eclipse.org/bugs/show_bug.cgi?id=536445
diff --git a/org.eclipse.osbp.releng.maven.parent.tycho/pom.xml b/org.eclipse.osbp.releng.maven.parent.tycho/pom.xml
index 0542da2..f433322 100644
--- a/org.eclipse.osbp.releng.maven.parent.tycho/pom.xml
+++ b/org.eclipse.osbp.releng.maven.parent.tycho/pom.xml
@@ -68,6 +68,7 @@
         		    <url>http://download.eclipse.org/releases/neon</url>
             		<layout>p2</layout>
         		</repository>
+<!--         		
 	            <repository>
 	                <id>EclipseNeonSR2</id>
 	                <url>http://download.eclipse.org/releases/neon/201612211000/
@@ -80,6 +81,7 @@
 	                </url>
 	                <layout>p2</layout>
 	            </repository>
+-->	            
 	            <repository>
 	                <id>Neon3 Orbit</id>
 	                <url>http://download.eclipse.org/tools/orbit/downloads/drops/R20170307180635/repository/
@@ -113,6 +115,7 @@
         		    <url>http://download.eclipse.org/releases/neon</url>
             		<layout>p2</layout>
         		</repository>
+<!--         		
 	            <repository>
 	                <id>EclipseNeonSR2</id>
 	                <url>http://download.eclipse.org/releases/neon/201612211000/
@@ -125,6 +128,7 @@
 	                </url>
 	                <layout>p2</layout>
 	            </repository>
+-->	            
 	            <repository>
 	                <id>Neon3 Orbit</id>
 	                <url>http://download.eclipse.org/tools/orbit/downloads/drops/R20170307180635/repository/
@@ -1453,6 +1457,14 @@
             <plugin>
                 <groupId>org.eclipse.xtend</groupId>
                 <artifactId>xtend-maven-plugin</artifactId>
+				<dependencies>
+					<!--  due to https://github.com/eclipse/xtext/issues/1231 -->
+					<dependency>
+					    <groupId>org.eclipse.platform</groupId>
+					    <artifactId>org.eclipse.equinox.common</artifactId>
+					    <version>3.10.0</version>
+					</dependency>
+				</dependencies>
                 <executions>
                     <execution>
                         <goals>
@@ -1556,7 +1568,15 @@
                     <groupId>org.eclipse.xtend</groupId>
                     <artifactId>xtend-maven-plugin</artifactId>
                     <version>${xtext.version}</version>
-                    <executions>
+					<dependencies>
+						<!--  due to https://github.com/eclipse/xtext/issues/1231 -->
+						<dependency>
+						    <groupId>org.eclipse.platform</groupId>
+						    <artifactId>org.eclipse.equinox.common</artifactId>
+						    <version>3.10.0</version>
+						</dependency>
+					</dependencies>
+					<executions>
                         <execution>
                             <goals>
                                 <goal>compile</goal>
diff --git a/pom.xml b/pom.xml
index 2181352..fb0ead1 100644
--- a/pom.xml
+++ b/pom.xml
@@ -1526,7 +1526,15 @@
 				<plugin>
 					<groupId>org.eclipse.xtend</groupId>
 					<artifactId>xtend-maven-plugin</artifactId>
-					<version>2.6.0</version>
+					<version>${xtext.version}</version>
+					<dependencies>
+						<!--  due to https://github.com/eclipse/xtext/issues/1231 -->
+						<dependency>
+						    <groupId>org.eclipse.platform</groupId>
+						    <artifactId>org.eclipse.equinox.common</artifactId>
+						    <version>3.10.0</version>
+						</dependency>
+					</dependencies>
 				</plugin>
 				<plugin>
 					<groupId>org.codehaus.mojo</groupId>