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.

testsuites/support/include/buffer_test_io.h

@@ -1,7 +1,5 @@
 /*
  *  Support for running the test output through a buffer
- *
- *  $Id$
  */
 
 #ifndef __BUFFER_TEST_IO_h