Update for playonlinx package

I've noticed that these 3 lib's are missing from the official package,

libtxc_dxtn – S3TC compression 32 bit

libSM.so.6 – Allows playonlinux to create 32 bit virtual drives

Mesa-demo-x – add's glxinfo

I use the open-source radeon graphics on 13.1, playonlinux won't function correctly without these three libs.