Removing all references to the old arithmetic library
Noted date of porting tests
Some basic tests for the ini_manager subsystem
Added some proper validation tests so that the return status is pass/fail
Fixed problems with compiling with Visual Studio 8
Regenerated Visual Studio Project files using the "make vcproject" command
Added ini_manager_test
Now v3.1
Switched back to using smart_ptr to manage the substructure
Put whole file into namespace stlplus rather than individual elements
