added emscripten platform
added CDN-based autodownload support to client
added emscripten conditionals to renderer to get it running
misc fixes to GLSL code / shaders to get them loading in WebGL
disabled GLSL_ValidateProgram
disable MD3 lods
adjusted default renderer cvars for emscripten builds
Misc fixes to IBO code to correctly use sizeof(glIndex_t)
use ushort index buffers until FF supports OES_element_index_uint
broke up CG_Init to enable JS event loop to breathe
async-ified FS_Startup
added JS platform to build
misc SDL fixes until SDL 1.2 headers are fixed in emscripten
fixed diffuse variable reference
added get / set methods for stdinIsATTY so it can be accessed by the JS layer
don't use default master servers
use different default sound due to so many missing assets
map SDLK_ESCAPE to K_F12
namespaced libc functions in bg_lib to prevent collisions with emscripten
added build support to build .js vms from source
updated entrypoint definitions to compile properly with emscripten