Log Message:
grub2: fix build error

pkgsrc changes:
---------------
  * The unifont 5.1.20080820 that was manually included in $WRKDIR made the
    native freetype2 fail in FT_Get_Char_Index() function while the pkgsrc
    freetype2 succeeded. The package now depends on fonts/unifont for build
    because the version 13.0.02 of unifont fixes the FT_Get_Char_Index()
    failure.
  * Bump revision