Clean up Makefile detection of gtk/gconf, check for openssl includes
Clean up Makefile detection of gtk/gconf, check for openssl includes

Signed-off-by: David Woodhouse <b460d66aaf00c296a3db1c1d9eeafc081d5f7d70@intel.com>

don-johnny/openconnect,matlockx/openconnect,ldx/android_external_openconnect,matlockx/openconnect,liiir1985/openconnect,nmav/openconnect-mine,certik/openconnect,lins05/openconnect,neshema/openconnect,chadcatlett/openconnect,neshema/openconnect,nmav/openconnect-mine,chadcatlett/openconnect,lins05/openconnect,lins05/openconnect,matlockx/openconnect,pbrook/openconnect,don-johnny/openconnect,nmav/openconnect-mine,cernekee/openconnect,atyndall/openconnect,liiir1985/openconnect,matlockx/openconnect,sihde/openconnect,cernekee/openconnect,certik/openconnect,atyndall/openconnect,certik/openconnect,mveplus/openconnect-client,mdutton3/OpenConnect,atyndall/openconnect,mtmiller/openconnect,mveplus/openconnect-client,lins05/openconnect,mveplus/openconnect-client,ldx/android_external_openconnect,liiir1985/openconnect,liiir1985/openconnect,cernekee/openconnect,atyndall/openconnect,don-johnny/openconnect,pbrook/openconnect,mdutton3/OpenConnect,mtmiller/openconnect,don-johnny/openconnect,sihde/openconnect,neshema/openconnect,sihde/openconnect,mtmiller/openconnect,brandt/openconnect,mtmiller/openconnect,chadcatlett/openconnect,neshema/openconnect,brandt/openconnect,mdutton3/OpenConnect,nmav/openconnect-mine,mveplus/openconnect-client,brandt/openconnect,cernekee/openconnect,chadcatlett/openconnect,brandt/openconnect