Use from qssl backend

Merge for resync

Use simple seeding method upon RANDOM_FILE seeding method failure.

Implement wrappers around strtod to convert the user argument to a
double with sane error checking. Use this to allow --max-time and
--connect-timeout to accept decimal values instead of strictly integers.

The manpage is updated to make mention of this feature and,
additionally, forewarn that the actual timeout of the operation can
vary in its precision (particularly as the value increases in its
decimal precision).

strto* functions happily chomp off leading whitespace, so simply
checking for str[0] can lead to false negatives. Do the full parse and
check the out value instead.

Update the build_vms.com to detect and use zlib shared image installed
by the ZLIB kit produced by Jean-Francois Pieronne, and the also the
future ZLIB 1.2.8 kit in addition to the older ZLIB kits.

Also fix the indentation to match one of the common standards used for
VMS DCL command files and removed the hard tab characters.

Tested on OpenVMS 8.4 Alpha and IA64, and OpenVMS 7.3 VAX.

Newer versions of curl are referencing a sk_pop symbol while the HP
OpenSSL library has the symbol in uppercase only.

This reverts commit 3a0e931f because
the documentation of --time-cond was duplicated by mistake.

Reported by: Dave Reisner

Issue posted to the list by malinowsky AT FTW DOT at.

This prevents it from being built during a "make check" since it
depends on OpenSSL.

I just noticed that OS X no longer supports SSLv2. Other TLS engines return
an error if the requested protocol isn't supported by the underlying
engine, so we do that now for SSLv2 if the framework returns an error
when trying to turn on SSLv2 support. (Note: As always, SSLv2 support is
only enabled in curl when starting the app with the -2 argument; it's off
by default. SSLv2 is really old and insecure.)