PR12425 backport https://github.com/bitcoin/bitcoin/pull/12425/files
be45a67 Add some script tests related to BOOL ops and odd values like negative 0. (Richard Kiss)
Pull request description:
Add some script tests related to BOOL ops and odd values like negative 0.
Backport note: 0x02 0x00 0x00 --> 0x02 0x0000 for our ParseScript variant.