gdal: version bump & cleanup
nss: version bumped to 3.16.
connman: version bumped to 1.23.
ffmpeg: add a needed compile parameter.
lcms2: version bumped to 2.6.
gmime: version bumped to 2.6.20.
qemu: version bumped to 2.0.0.
nmap: version bumped to 6.46.
clutter: version bumped to 1.18.2.
gdal: fix DEPENDS flags
gdal: comment some failing swig bindings
man-pages: version bumped to 3.65.
screen: version bumped to 4.2.0.
libdvdread: version bumped to 4.9.9.
gnutls: version bumped to 3.3.1.
gphoto2, libgphoto2: version bumped to 2.5.4.
Merge pull request #310 from v4hn/gdal

gdal: version bump & cleanup
doxygen: version bumped to 1.8.7.
gstreamer: version bumped to 1.2.4.
gst-libav: version bumped to 1.2.4.