Add missing dependencies reported by stage-qa:

USE_XORG+=      sm xinerama

devel/dbus (when GNOME option is enabled)

multimedia/gstreamer (when MMEDIA option is enabled)

graphics/poppler (-devel only, when PDFIMPORT option is enabled)

Add USES=ssl since this OpenOffice does use OpenSSL. The base and ports
versions of OpenSSL are both known to work. It is unknown if LibreSSL
works because the dependency ftp/curl does not currently build with
LibreSSL.

Replace one remaining path to a .jar file with ${JAVALIBDIR} in
CONFIGURE_ARGS.

Replace an absolute symlink with a relative one.

Re-align \ line continuation characters in *_DEPENDS after removal of
${PORTSDIR} from dependencies, and make a few other whitespace cleanups.

MFH: 2016Q3