Add OSGI dependency, activator.

This won't affect normal use of the client, other than it having
a few extra unused classes and some additional lines in the
manifest.

Issue #750

build.gradle

@@ -35,6 +35,7 @@ dependencies {
     compile group: 'com.google.code.findbugs', name: 'jsr305', version: '3.0.1'
     compile group: 'com.squareup.dagger', name: 'dagger-compiler', version: '1.2.5'
     compile group: 'com.google.auto.value', name: 'auto-value', version: '1.3'
+    compile group: 'org.osgi', name: 'org.osgi.core', version: '6.0.0'
 
     bundle group: 'ch.qos.logback', name: 'logback-classic', version: '1.1.7'
     bundle group: 'org.slf4j', name: 'slf4j-api', version:'1.7.21'

gradle/jar.gradle

@@ -62,6 +62,11 @@ jar {
 
     manifest {
         attributes 'Main-Class': 'com.dmdirc.Main'
+        attributes 'Bundle-Vendor': 'DMDirc Developers'
+        attributes 'Bundle-Copyright': 'Copyright (c) DMDirc Developers 2006-2017'
+        attributes 'Bundle-License': 'https://opensource.org/licenses/MIT'
+        attributes 'Bundle-Activator': 'com.dmdirc.ClientActivator'
+        attributes 'Import-Package': 'org.osgi.framework,javax.swing,javax.swing.text,javax.swing.text.html'
     }
 
     doLast {

src/main/java/com/dmdirc/ClientActivator.java

@@ -0,0 +1,42 @@
+/*
+ * Copyright (c) 2006-2017 DMDirc Developers
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
+ * documentation files (the "Software"), to deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+ * WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS
+ * OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+package com.dmdirc;
+
+import com.dmdirc.util.io.FileUtils;
+import org.osgi.framework.BundleActivator;
+import org.osgi.framework.BundleContext;
+
+/**
+ * OSGi bundle activator for the client. Eventually this shouldn't need to exist, as everything will be split into
+ * its own bundle.
+ */
+public class ClientActivator implements BundleActivator {
+
+    @Override
+    public void start(final BundleContext context) throws Exception {
+        System.out.println(context.getBundle().getLocation());
+        System.out.println(FileUtils.getApplicationPath(ClientActivator.class));
+        Main.main("-d", "etc/profile");
+    }
+
+    @Override
+    public void stop(final BundleContext context) throws Exception {
+        // Uh... *SHRUG*
+    }
+
+}