build against a standard OpenSSL library...
Still lots to do (implement AuthSSL), compiles all but final gui.
use USE_XPGP flag in build script to control it.
git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@796 b45a01b8-16f6-495d-af2f-9b41ad6348cc