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.
PR 1853/tests
* Makefile.am, configure.ac: Add test for case where a thread is
non-preemptive, multiple threads are ready at that priority, a higher
priority thread is heir and the thread yields.
* sp74/.cvsignore, sp74/Makefile.am, sp74/init.c, sp74/sp74.doc,
sp74/sp74.scn: New files.
