Major Frog refactoring: Added FrogAPI, exposing a Frog API for public use. Frog.cxx is sized down and uses FrogAPI. Also weeded out most of the global variables (=evil) and increased modularity. Everything seems to work, but more extensive testing is recommended.


git-svn-id: https://ilk.uvt.nl/svn/sources/Frog/trunk@17616 12f355fe-0486-481a-ad91-c297ab22b4e3