Allow working with older emcc versions

src/wasm-module.js

 	this.memory = new WebAssembly.Memory({initial: 256});
 	var env = {
 		memory: this.memory,
+		memoryBase: 0,
 		__memory_base: 0,
 		table: new WebAssembly.Table({initial: this.moduleInfo.tableSize, element: 'anyfunc'}),
+		tableBase: 0,
 		__table_base: 0,
 		abort: this.c_abort.bind(this),
 		___assert_fail: this.c_assertFail.bind(this),