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.
* Makefile.am, configure.ac: Add sp73. This is a new test designed
to improve coverage of the thread yield logic.
* sp73/.cvsignore, sp73/Makefile.am, sp73/init.c, sp73/sp73.doc,
sp73/sp73.scn: New files.