Isolated emscripten in new lib

lib/emscripten/emtests/test_constglobalstructs.c

@@ -0,0 +1,28 @@
+/*
+ * Copyright 2016 The Emscripten Authors.  All rights reserved.
+ * Emscripten is available under two separate licenses, the MIT license and the
+ * University of Illinois/NCSA Open Source License.  Both these licenses can be
+ * found in the LICENSE file.
+ */
+
+#include <stdio.h>
+struct IUB {
+  int c;
+  double p;
+  unsigned int pi;
+};
+
+IUB iub[] = {{'a', 0.27, 5}, {'c', 0.15, 4}, {'g', 0.12, 3}, {'t', 0.27, 2}, };
+
+const unsigned char faceedgesidx[6][4] = {{4, 5, 8, 10},
+                                          {6, 7, 9, 11},
+                                          {0, 2, 8, 9},
+                                          {1, 3, 10, 11},
+                                          {0, 1, 4, 6},
+                                          {2, 3, 5, 7}, };
+
+int main(int argc, const char *argv[]) {
+  printf("*%d,%d,%d,%d*\n", iub[0].c, int(iub[1].p * 100), iub[2].pi,
+         faceedgesidx[3][2]);
+  return 0;
+}