[test] Initial import of an emscripten test suite.

test/emscripten/core/test_memset-Os.out

Index: test/emscripten/core/test_memset-Os.out
diff --git a/test/emscripten/core/test_memset-Os.out b/test/emscripten/core/test_memset-Os.out
new file mode 100644
index 0000000000000000000000000000000000000000..7517e6ba601130295bfbfa38f26a56c65395221f
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@@ -0,0 +1,81 @@
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