Possibly solves STR#2521.
There are still warnings about bool <-> int conversion
that are probably benign.
There are also warnings during dependency creation
about other platform files that also appear to be benign.
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@8298 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
