[512050] setup Tycho support for Eclipse-SourceReferences

Bug: 512050
Change-Id: I4cdacf6820f55b670d315fb40b6572918bd978ce

org.eclipse.emf.ecoretools.build/pom.xml

diff --git a/org.eclipse.emf.ecoretools.build/pom.xml b/org.eclipse.emf.ecoretools.build/pom.xml
index 0630e0f..bb56957 100644
--- a/org.eclipse.emf.ecoretools.build/pom.xml
+++ b/org.eclipse.emf.ecoretools.build/pom.xml
@@ -38,6 +38,7 @@
 
     <properties>
         <tycho-version>0.23.1</tycho-version>
+        <tycho.scmUrl>scm:git:https://git.eclipse.org/r/ecoretools/org.eclipse.ecoretools</tycho.scmUrl>
     </properties>
 
 
@@ -104,7 +105,24 @@
                         </environment>
                     </environments>
                 </configuration>	          
-            </plugin>       
+            </plugin>
+            <plugin>
+			   <groupId>org.eclipse.tycho</groupId>
+			   <artifactId>tycho-packaging-plugin</artifactId>
+			   <version>${tycho-version}</version>
+			   <configuration>
+			      <sourceReferences>
+			        <generate>true</generate>
+			      </sourceReferences>
+			   </configuration>
+		       <dependencies>
+			      <dependency>
+			        <groupId>org.eclipse.tycho.extras</groupId>
+			        <artifactId>tycho-sourceref-jgit</artifactId>
+			        <version>${tycho-version}</version>
+			      </dependency>
+			   </dependencies>	
+            </plugin>
         </plugins>
         <pluginManagement>
             <plugins>