examples: warzone2100: add version 2.3.9 adaption
examples: adapt: don't exit in common code

The adaption script writer should have the ability to decide if he
wants to exit upon an issue while running a common adaption
function or to try another one.
adapt: warzone2100: 64-bit: try 3 lines if 4 don't work

The location of the malloc size in hex can differ between 1 and 2
lines above the _Znwm() call in the disassembly.
adapt: common: cache results where appropriate