Change parser group to com.dmdirc.

Parser modules are now com.dmdirc:parser-{foo}.

Closes #23

build.gradle

 subprojects {
-    group = 'com.dmdirc.parser'
+    group = 'com.dmdirc'
 
     apply plugin: 'com.dmdirc.git-version'
     apply plugin: 'maven-publish'
 def find(name) {
     if (allprojects.find { it.name == name }) {
         project(name)
+    } else if (allprojects.find { it.name == 'parser-' + name }) {
+        project('parser-' + name)
     } else if (allprojects.find { it.name == 'parser:' + name }) {
         project('parser:' + name)
     } else if (allprojects.find { it.name == 'modules:parser:' + name }) {

settings.gradle

 include 'common'
 include 'irc'
-include 'xmpp'
+include 'xmpp'
+
+project(':common').name = 'parser-common'
+project(':irc').name = 'parser-irc'
+project(':xmpp').name = 'parser-xmpp'