OCSP_CRLID_new and OCSP_crlID_new clash on case-insensitive systems.

missed any.

This compiles and runs on Linux, and external applications have no
problems with it.  The definite test will be to build this on VMS.

sure they are available in opensslconf.h, by giving them names starting
with "OPENSSL_" to avoid conflicts with other packages and by making
sure e_os2.h will cover all platform-specific cases together with
opensslconf.h.

I've checked fairly well that nothing breaks with this (apart from
external software that will adapt if they have used something like
NO_KRB5), but I can't guarantee it completely, so a review of this
change would be a good thing.

centralise those hacks in crypto/symhacks.h and use it everywhere it's
needed.

any more.

(actually, much more is needed, like a real config script)

Submitted by: Richard Levitte <levitte@stacken.kth.se>