From: Daniel Kahn Gillmor <dkg@fifthhorseman.net>
Date: Sat, 11 Jul 2015 19:09:02 -0400
Subject: enable build of docs

Without this change, after ./autogen.sh, ./configure --enable-gtk-doc
results in:

config.status: error: cannot find input file: `docs/libpsl/Makefile.in'
---
 configure.ac | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index 7fc1491..b5dcee8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -253,7 +253,7 @@ AC_CONFIG_FILES([Makefile
                  src/Makefile
                  tools/Makefile
                  po/Makefile.in
-                 ${docdir_makefile}
+                 docs/libpsl/Makefile
                  ${docdir_version_xml}
                  data/Makefile
                  tests/Makefile