Pick up Advanced Script Compiler release 13.

Compiler changelog for release 13:

Release 13:
-----------

- Added -j option to standalone compiler to show where an include
  file was really picked up from (useful for debugging include
  priority ordering problems).

- The compiler now correctly disambiguates between struct tag
  symbols and other symbols (improved language conformance with
  the BioWare compiler).

- Added support for recognizing the GOG.com NWN2 edition
  installation path.
Merge branch 'master' of https://github.com/ALandFarAway/ALFA-Base-Resources