no need to add 0 before alpha1 since we use a dash to ensure lexicographique order.

src/net/java/sip/communicator/impl/version/VersionImpl.java

@@ -158,11 +158,6 @@ public String getPreReleaseID()
         if(!isPreRelease())
             return null;
 
-        //if this is a nightly build, add a 0 at the beginning of the
-        //pre-release id so that it would lexicographically preceed the release.
-        if(isNightly())
-            return "0" + PRE_RELEASE_ID;
-
         return PRE_RELEASE_ID;
     }