libpng-drop-Llibdir.patch

   1 --- libpng-1.6.37/libpng-config.in.orig 2019-04-14 20:10:32.000000000 +0200
   2 +++ libpng-1.6.37/libpng-config.in      2020-01-15 19:59:39.773607141 +0100
   3 @@ -19,7 +19,7 @@
   4  libs="-lpng@PNGLIB_MAJOR@@PNGLIB_MINOR@"
   5  all_libs="-lpng@PNGLIB_MAJOR@@PNGLIB_MINOR@ @LIBS@"
   6  I_opts="-I${includedir}"
   7 -L_opts="-L${libdir}"
   8 +L_opts=""
   9  R_opts=""
  10  cppflags=""
  11  ccopts=""