Remove All CVS Id Strings Possible Using a Script

Script does what is expected and tries to do it as
smartly as possible.

+ remove occurrences of two blank comment lines
  next to each other after Id string line removed.
+ remove entire comment blocks which only exited to
  contain CVS Ids
+ If the processing left a blank line at the top of
  a file, it was removed.

c/src/ada/rtems-clock.adb

@@ -17,8 +17,6 @@
 --  the file LICENSE in this distribution or at
 --  http://www.rtems.com/license/LICENSE.
 --
---  $Id$
---
 
 package body RTEMS.Clock is