Subzero, Wasm: Link and run torture tests; bug fixes.

wasm-tests/hello-printf.c

Index: wasm-tests/hello-printf.c
diff --git a/wasm-tests/hello-printf.c b/wasm-tests/hello-printf.c
new file mode 100644
index 0000000000000000000000000000000000000000..d0c89ee66056ea27bdb753f78d445ba8389f5ae3
--- /dev/null
+++ b/wasm-tests/hello-printf.c
@@ -0,0 +1,6 @@
+#include <stdio.h>
+
+int main(int argc, const char **argv) {
+  printf("Hello, World!\n");
+  return 0;
+}