File _link of Package fltk

<link project="openSUSE:Factory" package="fltk">
<patches>
  <!-- <branch /> for a full copy, default case  -->
  <!-- <apply name="patch" /> apply a patch on the source directory  -->
  <!-- <topadd>%define build_with_feature_x 1</topadd> add a line on the top (spec file only) -->
  <!-- <add>file.patch</add> add a patch to be applied after %setup (spec file only) -->
  <!-- <delete>filename</delete> delete a file -->
</patches>
</link>