Apply three patches from Assar Westerlund <assar@kth.se>:

This patch makes the macros in des_old.h actually pretend to be
functions.

There's no reason not to define _ossl_old_crypt when using
PERL5/FreeBSD/darwin/Next, since it makes using crypt and including
des.h break.  Here's a trivial patch.

This patch fixes some of the typos used in macro names in des_old.h
and the number of arguments for some of them.