pom: adjust paths after git migration

pom.xml

diff --git a/pom.xml b/pom.xml
index 6e75210..1c0b773 100644
--- a/pom.xml
+++ b/pom.xml
@@ -9,7 +9,7 @@
 	<parent>
 		<artifactId>dltk</artifactId>
 		<version>1.0.0-SNAPSHOT</version>
-		<relativePath>../build/pom.xml</relativePath>
+		<relativePath>../org.eclipse.dltk.releng/build/pom.xml</relativePath>
 		<groupId>org.eclipse.dltk</groupId>
 	</parent>
 	<packaging>pom</packaging>