Write .lst after the second pass.

[Y-Less]

What this PR does / why we need it:

This moves the -l code output to after the second pass, so that the generated code is the most accurate it can be.

Which issue(s) this PR fixes:

Fixes #116

What kind of pull this is:

• A Bug Fix
• A New Feature
• Some repository meta (documentation, etc)
• Other

Additional Documentation:

[Southclaws]

I might revive my parser project because of this!

[AGraber]

I think there should be a way to still print the first pass, through another flag of course.

[Southclaws]

Yes that would be useful for investigating exactly what the difference is with complex macros.

[Y-Less]

The only difference this makes to macros is code like this:

#if defined Hooked_OnPlayerConnect
    Hooked_OnPlayerConnect(playerid);
#endif

All other macros, unless you are doing very odd things with future definitions, will be the same. It doesn't replace at a later stage in macro replacement, those have always been atomic.

[Southclaws]

Code looks fine to my (untrained) eyes, since I intend to work on a parser soon I wanted to get this in for the next version. I'll hopefully get around to testing this at the weekend.