diffutils: Disable gnulib testsuite

This testsuite does not work well on grsecurity-enabled kernels.

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

diffutils/diffutils.nm

@@ -5,7 +5,7 @@
 
 name       = diffutils
 version    = 3.3
-release    = 2
+release    = 3
 
 groups     = Development/Tools
 url        = http://www.gnu.org/software/diffutils/diffutils.html
@@ -27,6 +27,12 @@ build
 		perl
 	end
 
+	prepare_cmds
+		# Disable gnulib test suite which does not work on
+		# grsecurity kernels
+		sed -e "s/gnulib-tests//" -i Makefile.{am,in}
+	end
+
 	test
 		make check
 	end