please install on unstable10x/s

[Jake Goerzen via buildfarm]

Hi,

   Please install the following packages on unstable10x/s:

libsdl_gfx15
libsdl_gfx15_dev

The run-time packages for the following are already installed but I need 
these development packages installed as well:

libsdl_mixer_dev
libsdl_net_dev
libsdl_ttf_dev

Thanks!
Jake