Move the zip/tarball creation assemblies (release.xml & src-release.xml) to [src]/dspace/src/main/assembly/

Also move the DSpace build assembly (assembly.xml) file to that directory as well, to consolidate.

dspace/src/main/assembly/release.xml

@@ -0,0 +1,41 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+
+    The contents of this file are subject to the license and copyright
+    detailed in the LICENSE and NOTICE files at the root of the source
+    tree and available online at
+
+    http://www.dspace.org/license/
+
+-->
+<assembly xmlns="http://maven.apache.org/POM/4.0.0"
+          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/assembly-1.1.0-SNAPSHOT.xsd">
+   <id>release</id>
+   <formats>
+      <format>zip</format>
+      <format>tar.gz</format>
+      <format>tar.bz2</format>
+   </formats>
+   <baseDirectory>${finalName}-release</baseDirectory>
+   <includeBaseDirectory>true</includeBaseDirectory>
+   <fileSets>
+      <fileSet>
+         <useDefaultExcludes>true</useDefaultExcludes>
+         <includes>
+            <include>dspace/**</include>
+            <include>LICENSE*</include>
+            <include>NOTICE</include>
+            <include>README</include>
+            <include>build.properties</include>
+            <include>pom.xml</include>
+         </includes>
+         <excludes>
+            <exclude>**/target/**</exclude>
+            <exclude>make-release-package</exclude>
+            <exclude>.*</exclude>
+         </excludes>
+      </fileSet>
+   </fileSets>
+
+</assembly>

dspace/src/main/assembly/src-release.xml

@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+
+    The contents of this file are subject to the license and copyright
+    detailed in the LICENSE and NOTICE files at the root of the source
+    tree and available online at
+
+    http://www.dspace.org/license/
+
+-->
+<assembly xmlns="http://maven.apache.org/POM/4.0.0"
+          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/assembly-1.1.0-SNAPSHOT.xsd">
+   <id>src-release</id>
+   <formats>
+      <format>zip</format>
+      <format>tar.gz</format>
+      <format>tar.bz2</format>
+   </formats>
+   <baseDirectory>${finalName}-src-release</baseDirectory>
+   <includeBaseDirectory>true</includeBaseDirectory>
+   <fileSets>
+      <fileSet>
+         <useDefaultExcludes>true</useDefaultExcludes>
+         <excludes>
+            <exclude>**/target/**</exclude>
+            <exclude>make-release-package</exclude>
+            <exclude>.*</exclude>
+         </excludes>
+      </fileSet>
+   </fileSets>
+
+</assembly>