Update XMvn to version 4.0.0

Author: mizdebsk

project/xmvn.properties

@@ -1,3 +1,3 @@
 url=https://github.com/fedora-java/xmvn.git
-ref=619d710
-version=4.0.0~SNAPSHOT
+ref=@.@.@
+version=4.0.0

project/xmvn.xml

@@ -35,7 +35,7 @@
       <compiler>
         <release>11</release>
         <addSourceRoot>xmvn-api/src/main/java</addSourceRoot>
-        <addSourceRoot>xmvn-connector-aether/src/main/java</addSourceRoot>
+        <addSourceRoot>xmvn-connector/src/main/java</addSourceRoot>
         <addSourceRoot>xmvn-core/src/main/java</addSourceRoot>
         <addSourceRoot>xmvn-mojo/src/main/java</addSourceRoot>
         <addSourceRoot>xmvn-tools/xmvn-install/src/main/java</addSourceRoot>