This compiles, and statrs under Linux/64

- added ": public iIntrusiveCounter" token to several classes that have been used only in UNIX build
- removed dependency on no-longer-existent swl_wincore_ui_inc.h from makefile.int
Merge pull request #66 from helgp/stl

This compiles, and statrs under Linux/64
Merge remote-tracking branch 'remotes/origin/stl' into master-0.16.2