Forcing one of the files to change so we might actually get a new build.

jme3-core/src/main/java/com/jme3/system/JmeVersion.java

@@ -58,7 +58,7 @@ public class JmeVersion {
     public static final String BRANCH_NAME      = props.getProperty("git.branch", "unknown");
     public static final String GIT_HASH         = props.getProperty("git.hash", "");
     public static final String GIT_SHORT_HASH   = props.getProperty("git.hash.short", "");
-    public static final String GIT_TAG          = props.getProperty("git.tag", "");
+    public static final String GIT_TAG          = props.getProperty("git.tag", "3.1-unknown");
     public static final String VERSION_NUMBER   = props.getProperty("version.number", "");
     public static final String VERSION_TAG      = props.getProperty("version.tag", "");
     public static final String VERSION_FULL     = props.getProperty("version.full", "");