QNX: Add -openssl-linked configure option

On Windows one needs to additional do

  set OPENSSL_LIBS="-lssl -lcrypto"

to override the by default values.

Change-Id: I163a337dd4924ea4d414f36cb9c119554f928235
Reviewed-by: Wolfgang Bremer <wbremer@blackberry.com>
Reviewed-by: Iikka Eklund <iikka.eklund@digia.com>
Reviewed-by: Sergio Ahumada <sahumada@blackberry.com>