Merge branch 'stable-4.8' into stable-4.9

* stable-4.8:
  SubmoduleValidator: Remove unused import of ConfigConstants

Change-Id: Id01fd9945e23a9343f96c42db89d5a1b302dad33
Signed-off-by: Jonathan Nieder <jrn@google.com>

org.eclipse.jgit/src/org/eclipse/jgit/internal/submodule/SubmoduleValidator.java

@@ -52,7 +52,6 @@ import java.text.MessageFormat;
 import org.eclipse.jgit.errors.ConfigInvalidException;
 import org.eclipse.jgit.internal.JGitText;
 import org.eclipse.jgit.lib.Config;
-import org.eclipse.jgit.lib.ConfigConstants;
 
 /**
  * Validations for the git submodule fields (name, path, uri).