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.

aclocal/enable-rtems-debug.m4

@@ -1,5 +1,3 @@
-## $Id$
-
 AC_DEFUN([RTEMS_ENABLE_RTEMS_DEBUG],
 [
 AC_ARG_ENABLE(rtems-debug,