gtk-vnc security, bug fix, and enhancement update

0.7.0-2 - Fix reserved data size rhbz 1416783 - Fix inverted args in tests rhbz 1416783 - Avoid sign extension problems rhbz 1416783 - Fix crash with opening via GSocketAddress rhbz 1416783 - Fix crash & error reporting during connection timeout rhbz 1441120 - Fix incompatibility with libvncserve...