The getNumArguments function had CODE_IMPORT_MODULE incorrectly listed as a 1-argument
opcode and CODE_IMPORT_VARIABLE as a 2-argument opcode. This swap caused incorrect
bytecode parsing during method binding. Additionally, wrenBindMethodCode had two bugs:
the instruction fetch was incrementing ip before reading the opcode, and field offset
patching was using ip++ instead of ip+1, corrupting subsequent bytecode. The super
instruction handling also had an incorrect ip+=2 skip that removed the symbol offset
before reading the constant index.
