libwebsock: Fix openssl reporting in header

libwebsock: Fix openssl reporting in header

The websock_config.h file currently ends up being installed into the
sysroot with a #include "config.h" line but the config.h file does not
get copied into the sysroot. Refactoring the original patch to have the
configure script properly report whether or not SSL support is enabled
without using the config.h file.

Patch has been submitted upstream but may never be merged since upstream
appears to be dead.
https://github.com/payden/libwebsock/pull/38

Signed-off-by: Clayton Shotwell <clayton.shotwell@rockwellcollins.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>