Fickling: OBJ opcode call invisibility bypasses all safety checks

Assessment The interpreter so it behaves closer to CPython when dealing with OBJ, NEWOBJ, and NEWOBJEX opcodes https://github.com/trailofbits/fickling/commit/ff423dade2bb1f72b2b48586c022fac40cbd9a4a. Original report Summary All 5 of fickling's safety interfaces -- islikelysafe, checksafety, CLI...