Fix for problem getting libraries to load on Linux
Fix for problem getting libraries to load on Linux

Since Windows and Mac aren't case sensative, and (at least the systems I tested) weren't defining `EDGE_PLATFORM_NIX` here, switching them to always be lowercase paths.

(WSL also can't seem to verify the hash checks correctly, but I'll leave that part out of the commit until I figure out what exactly is going on there.)

agracio/edge-js,agracio/edge-js,agracio/edge-js,agracio/edge-js,agracio/edge-js,agracio/edge-js