async-ified FS_Startup
added JS platform to build
misc SDL fixes until SDL 1.2 headers are fixed in emscripten
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
namespaced libc functions in bg_lib to prevent collisions with emscripten
updated entrypoint definitions to compile properly with emscripten
added major vid_restart fast hack to enable responsive window resizing
temporary renderer workaround for https://bugzilla.icculus.org/show_bug.cgi?id=6083
raise default com_hunkMegs for emscripten builds
rough first pass at JS vm compiler
optimize functions calls where we know the absolute address
optimize binary operations that load / store from and to the same location
don't perform unneccessary casts when we can load directly from HEAPF32
apply constant offsets at build time
refactored and updated compiler
use a single static VBO / IBO for RB_StretchPic
replace usage of glAlphaFunc inside fragment shaders