Correct misspelled VXWORKS macros.
Add VXWORKS identifying macros to e_os2.h.
Add required inclusions and mappings for VxWorks in e_os.h.
A few small modifications to make OpenSSL build and work on VxWorks.
PR: 253, except for the  change that was handled in an earlier
         commit, and a request for easy build of just parts of OpenSSL.

PR: 75

PR: 51

and write().  The reason is that read() and write() make additional record
level locking which causes hangs of Compaq Secure Web Server (Apache) with
SSL.
Submitted by Compaq.

_REENTRANT if threads support is enabled, the ./Configure entry must
define it so that it ends up in CFLAG.

Changes to have OpenSSL compile on OS/2.
Contributed by "Brian Havard" <brianh@kheldar.apana.org.au>

For those, unless the environment variables RANDFILE or HOME are
defined (the default case!), RAND_file_name() will return NULL.
This change adds a default HOME for those platforms.

To add a default HOME for any platform, just define DEFAULT_HOME in
the proper place, wrapped in appropriate #ifdef..#endif, in e_os.h.

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.

reasonable selection.

only queried when the /dev/[u]random devices did not return enough
entropy. Only the amount of entropy missing to reach the required minimum
is queried, as EGD may be drained.
Queried locations are: /etc/entropy, /var/run/egd-pool

quick answer, take that one first.

them for a short period of time (actually, poll them with select(),
then read() whatever is there), which is about 10ms (hard-coded value)
each.

Separate Windows and Unixly code, and start on a VMS variant that
currently just returns 0.

SSLeay with Colin Plumb's MD5 implementation instead of his one".

supposed to be defined according to XPG4.2.
Found by Evan <n2xjk@ulster.net> for the MVS platform.

Submitted by NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>

Submitted by: John Jarvie <jjarvie@newsguy.com>

not defined, but __SVR4 is.

Contributed by SAKAI Kiyotaka <ksakai@kso.netwk.ntt-at.co.jp>

openssl.c: make damn sure e_os.h knows about OPENSSL_C

is activated only when _POSIX_SOURCE is defined).

structure better.  I hope noone minds, and that it still works.  Steve?

are not guaranteed to be unpredictable.