Thin wrapper around Portex to be able to read the PE file embedded inside a XEX file transparently.

let xexfile = XexFile::open("default.xex")?;

XexFile contains 2 fields:

• file: fs::File to default.xex
• headers: portex::PEHeaders where pointer_to_raw_data has been adjusted.

Only accepts files starting with 58 45 58 32 00 00 00 01.