Keep .install file header at the top of the file

For .install files, deadwood keeps the "// $Id..." line at the top of the file, but in case any other file comment is made, it will be moved below hook_schema(), which is wrong. Example: original .install file structure:

// $Id: versioncontrol.install,v 1.39 2009/01/03 13:21:28 jpetso Exp $
/**
 * @file
 * Version Control API - An interface to version control systems
 * whose functionality is provided by pluggable back-end modules.
 *
 * Copyright 2006 by Karthik ("Zen", [url devastated by input filter])
 * Copyright 2006, 2007 by Derek Wright ("dww", [url devastated by input filter])
 * Copyright 2007, 2008, 2009 by Jakob Petsovits ("jpetso", [url devastated by input filter])
 */

/**
 * Implementation of hook_install().
 */
function versioncontrol_install() {
  (...)
}

/**
 * Implementation of hook_uninstall().
 */
function versioncontrol_uninstall() {
  (...)
}

After running deadwood on it, the file looks like this:

// $Id: versioncontrol.install,v 1.38 2009/01/02 21:27:31 jpetso Exp $
/**
 * Implementation of hook_schema().
 */
function versioncontrol_schema() {
  (...)
}

/**
 * @file
 * Version Control API - An interface to version control systems
 * whose functionality is provided by pluggable back-end modules.
 *
 * Copyright 2006 by Karthik ("Zen", [url devastated by input filter])
 * Copyright 2006, 2007 by Derek Wright ("dww", [url devastated by input filter])
 * Copyright 2007, 2008, 2009 by Jakob Petsovits ("jpetso", [url devastated by input filter])
 */

/**
 * Implementation of hook_install().
 */
function versioncontrol_install() {
  (...)
}


/**
 * Implementation of hook_uninstall().
 */
function versioncontrol_uninstall() {
  (...)
}

There could probably be heuristics for such file header comments, I think that aspect works correctly for .module.