Fixed unittests(d).exe name (was: unittest(d).exe).
Added missing custom build rule to tree.fl in Release mode.
Fixed fluid dependency (removed fltkdll), since this made fluid.exe build
with fltkdll.dll (strange, the same config works in VisualC2010).
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@8716 ea41ed52-d2ee-0310-a9c1-e6b18d33e121