WIP: Silence misleading warnings about gameoverlayrenderer.so
When we need to run the main executable for a game, Steam usually appends to the LD_PRELOAD the 32-bit and 64-bit version of gameoverlayrenderer.so
However this leads to multiple warnings in the pressure-vessel log because ld.so will complain that it was not able to preload the 32-bit (or 64-bit) version of the library that was requested.
To prevent that, we remove the game overlay library from LD_PRELOAD and we let pressure-vessel put it back when necessary, with the adjusted path that avoids preloading warnings.
Requires steam-runtime-tools!286 (closed)
Still a WIP.