Bug 173902 remove EXPERIMENTAL markings from 3.3 IDE Undo API
Need to remove the EXPERIMENTAL javadoc from the new API I introduced in 3.3. See org.eclipse.ui.ide.undo org.eclipse.jface.fieldassist
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/ide/undo/AbstractMarkersOperation.java
* @return the status indicating whether the operation can be undone
	 */
	protected abstract IStatus getBasicUndoStatus();
	/**
	 * Return a status indicating the projected outcome of redoing the marker
	 * operation. The receiver is not responsible for remembering the result of
	 * this computation.
	 * 
	 * @return the status indicating whether the operation can be undone
	 */
	protected abstract IStatus getBasicRedoStatus();
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.ide.undo.AbstractWorkspaceOperation#computeExecutionStatus(org.eclipse.core.runtime.IProgressMonitor)
	 */
	public IStatus computeExecutionStatus(IProgressMonitor monitor) {
		IStatus status = getBasicRedoStatus();
		if (status.isOK()) {
			return super.computeExecutionStatus(monitor);
		}
		if (status.getSeverity() == IStatus.ERROR) {
			markInvalid();
		}
		return status;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.ide.undo.AbstractWorkspaceOperation#computeUndoableStatus(org.eclipse.core.runtime.IProgressMonitor)