We're installing architecture dependent (compiled) programs in
architecture specific directories, while architecture independent
programs (scripts) get installed in the general programs directory.
OSSL$EXE: reflects that by having two values.
Reviewed-by: NRich Salz <rsalz@openssl.org>

Since there's been quite some changes, documentation needs updating
Reviewed-by: NRich Salz <rsalz@openssl.org>

We previously had a number of logical names for the different parts.
There's really no need for that, the default directories are in one
directory tree.  So we only define OSSL$DATAROOT: and make everything
related to that one.
Reviewed-by: NRich Salz <rsalz@openssl.org>

This logical names permits '#include <openssl/foo.h>' to work properly.
Reviewed-by: NRich Salz <rsalz@openssl.org>

OpenSSL engines are tied to the OpenSSL shared library versions,
starting with OpenSSL 1.1.  We therefore need to install them in
directories which have the shared library version in it's name, to
easily allow multiple OpenSSL versions to be installed at the same
time.

For VMS, the change is a bit more involved, primarly because the top
installation directory was already versioned, *as well as* some of the
files inside.  That's a bit too much.  Version numbering in files is
also a bit different on VMS.  The engines for shared library version
1.1 will therefore end up in OSSL$INSTROOT:[ENGINES0101.'arch']

('arch' is the architecture we build for)
Reviewed-by: NRich Salz <rsalz@openssl.org>

- The install top is versioned by default.  However, only the major
  version should be used.
- the default areas for certs, private keys an config files have
  changed, now all prefixed with 'OSSL$'.  This gets reflected in
  cryptlib.h.
- [.VMS]openssl_startup.com.in had some faults regarding creating
  rooted concealed logical names.
Reviewed-by: NRich Salz <rsalz@openssl.org>

Also, have the static library file names contain the pointer size when
applicable.
Reviewed-by: NRich Salz <rsalz@openssl.org>

Reviewed-by: NRich Salz <rsalz@openssl.org>

They were using the wrong variables.
Reviewed-by: NAndy Polyakov <appro@openssl.org>

Reviewed-by: NRich Salz <rsalz@openssl.org>

Reviewed-by: NRich Salz <rsalz@openssl.org>

Reviewed-by: NRich Salz <rsalz@openssl.org>

As part of this, change util/mkdef.pl to stop adding libraries to
depend on in its output.  mkdef.pl should ONLY output a symbol
vector.

Because symbol names can't be longer than 31 characters, we use the
compiler to shorten those that are longer down to 23 characters plus
an 8 character CRC.  To make sure users of our header files will pick
up on that automatically, add the DEC C supported extra headers files
__decc_include_prologue.h and __decc_include_epilogue.h.

Furthermore, we add a config.com, so VMS people can configure just as
comfortably as any Unix folks, thusly:

    @config
Reviewed-by: NRich Salz <rsalz@openssl.org>