Add reading of the binary file to the jsc

• Component: JavaScriptCore
• Status: NEW ---

[Yury Delendik]

We are using jsc to test the Shumway project (see [1]). Currently jsc has no way to read binary files (js has `read` with seconds argument, d8 has `readbuffer`)

Could you add something like readBinaryFile (along the lines of [2] -- returns wrong length atm) or second argument to the readFile to return ArrayBuffer or Uint8Array?

Thanks.

 [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1108390
 [2] https://gist.github.com/yurydelendik/2d88b2c8bc6e4f2bbe87