- Cleaned out some of the compiler warnings in the scenario editor (removing unused variables mostly).

- Finally removed the grow box in the corner of the scenario editor window.
- Changed #include <iostream> in several headers to #include <iosfwd>, since they were only present for the use of
  the ostream and istream classes, and cout/cin were unneeded.
- Changed bool to Boolean in the old structs, since that's what it was originally.
- Small changes to graphtool, including an overload of get_custom_rect.
- Added gcd function to mathutil; was needed for something in the new dialog engine


git-svn-id: http://openexile.googlecode.com/svn/trunk@71 4ebdad44-0ea0-11de-aab3-ff745001d230

osx/classes/pc.h

@@ -10,7 +10,7 @@
 #define PC_H
 
 #include <string>
-#include <iostream>
+#include <iosfwd>
 
 namespace legacy { struct pc_record_type; };