Adding several new packages but mostly for testing.
* alsa-plugins: Updated SlackBuild.
* clementine: Updated SlackBuild.
* gksu: Updated SlackBuild.
* hotot: Upgraded to version 0.9.8.10.
* iniparser: Added version 3.1. Used by ocsync.
* json-c: Updated SlackBuild.
* libgksu: Updated SlackBuild. Add patch to fix building with glib 2.32.x.
* libgxps: Added version 0.2.2. Used by mate-document-viewer to open
    Postscript file.
* libunique: Added back version 1.1.6. Add patch to fix build with
    glib-2.32.x.
* mirall: Added version 1.2.0. This is ownCloud desktop client. Need ocsync.
* nginx: Upgraded to version 1.2.6.
* ocsync: Added version 0.70.3. Used by mirall. Need iniparser.