Should unit ctypes be shipped with our project for Delphi users?

[Free-Pascal-meets-SDL-Website]

At the moment we have this file ctypes.inc to map native c data types for Delphi users. Would it be better to ship the ctypes unit from FPC along with our project?

Advantage

• we do not need to maintain a separate file ourselves
• both compilers have the same condition: on the same system, the mapping will be the same
• many different systems would get the correct C types mapping (our ctypes.inc is very, very basic)
• we don't need to IFDEF the ctypes unit anymore

Disadvantage

• not sure about the compatibility of the ctypes unit with Delphi (there are delphi conditionals within the file, but are they meant for Delphi or FPC's Delphi mode?)
• Not sure about the licensing, can our MPL-zlib dual license still apply if we ship the unit along with our project? (If not, case is closed, we can not do it.)
• We need to make sure to keep the most recent version of the ctypes unit (but it seems, it is updated very, very rarely)

Best regards

Edit: Correct typo in license abbreviation.