[4.1] 3091011 Remove build artifacts from distributed HTML docs.

[Lasse Karstensen]

commit 3091011ac6716320a7fa7dca54d2ca26be2b3069
Author: Lasse Karstensen <lkarsten at varnish-software.com>
Date:   Tue Sep 8 13:51:12 2015 +0200

    Remove build artifacts from distributed HTML docs.

diff --git a/doc/sphinx/Makefile.am b/doc/sphinx/Makefile.am
index 6d71c14..fbfe06b 100644
--- a/doc/sphinx/Makefile.am
+++ b/doc/sphinx/Makefile.am
@@ -118,6 +118,8 @@ dist-hook:
 	$(MAKE) html
 	rm -rf $(BUILDDIR)/doctrees
 	cp -r $(BUILDDIR)/html $(distdir)/../
+	@ # Remove build artifacts.
+	rm $(distdir)/../html/.buildinfo $(distdir)/../html/*.inv
 
 distclean-local:
 	rm -rf $(BUILDDIR)