Fixed gcc build error

git-svn-id: https://agg.svn.sourceforge.net/svnroot/agg@70 ab9de31f-a152-4fe9-8809-95f286f9ca89
Fixes for svg_test example.
Updated VS project files.

git-svn-id: https://agg.svn.sourceforge.net/svnroot/agg@71 ab9de31f-a152-4fe9-8809-95f286f9ca89