Fix for STR#3079 (WIN32 only).

git-svn-id: http://seriss.com/public/fltk/fltk/branches/branch-1.3@10144 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
Removed compilation warnings.

git-svn-id: http://seriss.com/public/fltk/fltk/branches/branch-1.3@10145 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
Fix for STR#3079 (cont'd).

git-svn-id: http://seriss.com/public/fltk/fltk/branches/branch-1.3@10146 ea41ed52-d2ee-0310-a9c1-e6b18d33e121