Allow x.y.z-abc versions in Maven artifacts (instead of just x.y.z)

Thanks to Thomas Broyer (from issue 1591805).

This allows for things like 2.5.0-companyname-r10757 or
2.5.0-companyname-r10757-patched, as recommended by
http://www.sonatype.com/people/2009/01/best-practices-for-releasing-with-3rd-party-snapshot-dependencies/

Review at http://gwt-code-reviews.appspot.com/1595803


git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@10759 8db76d5a-ed1c-0410-87a9-c151d255dfc7
diff --git a/maven/push-gwt.sh b/maven/push-gwt.sh
index 1e20732..3037afb 100755
--- a/maven/push-gwt.sh
+++ b/maven/push-gwt.sh
@@ -29,8 +29,10 @@
 case $gwtVersion in
   *.*.* )
     ;;
+  *.*.*-* )
+    ;;
   * )
-    echo "Please enter a version of the form x.y.z" 
+    echo "Please enter a version of the form x.y.z or x.y.z-abc" 
     exit 1;;
 esac