Remove some old files. I read the PROBLEMS, and they're outdated; nothing I'd put in the online FAQ, for example. Test-builds work without using these files. Had to remove the rehash.time stuff from Makefile.in Reviewed-by: Richard Levitte <levitte@openssl.org>
Update 'certs' directory. Move expired certificates to expired directory and zero assurance demontrations CAs to 'demo'.