[PATCH] D26431: [WebAssembly] Define __unix__ as part of the wasm target

[Derek Schuff via cfe-commits]

dschuff accepted this revision.
dschuff added a comment.
This revision is now accepted and ready to land.

Also it matches asm.js @sunfish is planning on unifying the triples, and this will be part of that (and there may be more defines that we want to add and/or subtract), but for now it makes more of the emscripten test suite pass, so LGTM


https://reviews.llvm.org/D26431