Copy over NSInteger safety typedefs from Fl_cocoa.mm
so that we can continue to compile for OS X 10.4.


git-svn-id: http://seriss.com/public/fltk/fltk/branches/branch-1.3@9973 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
STR 2636. Add ability to get notifications whenever the
clipboard changes.


git-svn-id: http://seriss.com/public/fltk/fltk/branches/branch-1.3@9974 ea41ed52-d2ee-0310-a9c1-e6b18d33e121