-Avoid hardlinks which does not work on Android 6+.
-
-diff -u -r ../bind-9.10.3/lib/lwres/man/Makefile.in ./lib/lwres/man/Makefile.in
---- ../bind-9.10.3/lib/lwres/man/Makefile.in 2015-09-08 22:23:40.000000000 -0400
-+++ ./lib/lwres/man/Makefile.in 2015-10-11 11:26:55.640495883 -0400
-@@ -95,138 +95,138 @@
+diff -u -r ../bind-9.11.1-P3/lib/lwres/man/Makefile.in ./lib/lwres/man/Makefile.in
+--- ../bind-9.11.1-P3/lib/lwres/man/Makefile.in 2017-07-07 17:01:52.000000000 +0200
++++ ./lib/lwres/man/Makefile.in 2017-07-26 13:13:17.575587105 +0200
+@@ -92,141 +92,141 @@