Add a bunch of constants.
Add a bunch of constants.

These are useful for checking values I'll be adding support for later.

import pepy
print hex(pepy.MZ_MAGIC)

wxsBSD/pe-parse,trailofbits/pe-parse,jkolek/pe-parse,trailofbits/pe-parse,wxsBSD/pe-parse,jkolek/pe-parse,trailofbits/pe-parse