LEB128 decoder and section parsing

test/run_tests.sh

@@ -28,6 +28,7 @@ check "no arguments"    "Usage:"               $WASM
 check "valid wasm"      "Valid wasm file"       $WASM test/wasm/valid.wasm
 check "bad magic"       "invalid wasm magic"    $WASM test/wasm/badmagic.wasm
 check "bad version"     "unsupported wasm"      $WASM test/wasm/badver.wasm
+check "section list"    "(Type)"                $WASM test/wasm/valid.wasm
 
 echo ""
 echo "Results: $PASS/$TESTS passed, $FAIL failed"