Primarily this is handling cases where top-level files moved into
the docs/ directory. I also corrected a typo and removed the
claim that libssh2 is public domain.
This gets us large file support, is available on any VMS release
in the last decade and more, and gives stat other modern features
such as 64-bit ino_t.
VMS does have stdlib.h, gettimeofday(), and OpenSSL. The latter
is appropriate to hard-wire in the configuration because it's
installed by default as part of the base operating system and
there is currently no libgcrypt port.
