Added hacked together Python prototype of image thumbnailer
Replaced Glibmm with glib, Gstreamermm0.10 with gstreamer1.0
Replaced all C++ code with C code in VideoProcessor
Fixed buffer to Cairo copy, basic thumbnailing is working again
Switched from gst_pad_add_probe() to preroll-handoff, cleaned up stdout a bit
Improved command line arguments and fixed a few memory holes
Merge branch 'feature/gstreamer1.0'