Merge "Add a hint on the purpose of JGitInternalException to the constructor"

org.eclipse.jgit/src/org/eclipse/jgit/api/errors/JGitInternalException.java

 	private static final long serialVersionUID = 1L;
 
 	/**
+	 * Construct an exception for low-level internal exceptions
+	 *
 	 * @param message
 	 * @param cause
 	 */
 	}
 
 	/**
+	 * Construct an exception for low-level internal exceptions
+	 *
 	 * @param message
 	 */
 	public JGitInternalException(String message) {