Update build to use Tycho 0.15.0

Also use packaging type eclipse-repository to create the p2 repository
since Tycho fixed bug 368596 which we worked around using packaging type
eclipse-update-site.

Change-Id: Id4ee884027d55cd2d43e8a6ef58a67f74ab488e4
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

org.eclipse.jgit.packaging/org.eclipse.jgit.repository/assembly.xml

@@ -1,14 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<assembly>
-  <id>site</id>
-  <formats>
-    <format>zip</format>
-  </formats>
-  <includeBaseDirectory>false</includeBaseDirectory>
-  <fileSets>
-    <fileSet>
-      <directory>${project.build.directory}/site</directory>
-      <outputDirectory>/</outputDirectory>
-    </fileSet>
-  </fileSets>
-</assembly>

org.eclipse.jgit.packaging/org.eclipse.jgit.repository/pom.xml

@@ -54,9 +54,7 @@
   </parent>
 
   <artifactId>org.eclipse.jgit.repository</artifactId>
-  <!-- TODO as soon as Tycho bug 368596 is fixed we should use packaging type
+  <packaging>eclipse-repository</packaging>
-       eclipse-repository -->
-  <packaging>eclipse-update-site</packaging>
 
   <name>JGit P2 Repository</name>
 
@@ -82,28 +80,4 @@
       <version>${project.version}</version>
     </dependency>
   </dependencies>
-
-  <build>
-    <plugins>
-      <plugin>
-        <groupId>org.apache.maven.plugins</groupId>
-        <artifactId>maven-assembly-plugin</artifactId>
-        <version>2.3</version>
-        <configuration>
-          <descriptors>
-            <descriptor>assembly.xml</descriptor>
-          </descriptors>
-        </configuration>
-        <executions>
-          <execution>
-            <id>make-assembly</id>
-            <phase>package</phase>
-            <goals>
-              <goal>single</goal>
-            </goals>
-          </execution>
-        </executions>
-      </plugin>
-    </plugins>
-  </build>
 </project>

org.eclipse.jgit.packaging/pom.xml

@@ -59,7 +59,7 @@
   <name>JGit Tycho Parent</name>
 
   <properties>
-    <tycho-version>0.14.1</tycho-version>
+    <tycho-version>0.15.0</tycho-version>
     <jetty-version>7.6.0.v20120127</jetty-version>
     <eclipse-site>http://download.eclipse.org/releases/indigo</eclipse-site>
   </properties>