Add: Param to specify filename for AddDelayedCode

We now able to specify a file-name for addDelayedCode. This can
simplify debugging internal error for files added using AddDelayedCode.

Note: Simba has to be updated to compile with this change. See: https://github.com/MerlijnWajer/Simba/blob/master/Units/Misc/lpdump.pas#L27