[experimental-ims] b18e8d0 Make distcheck work again.

[Geoff Simmons]

commit b18e8d0c9309ccdc5fa4c2c4d3ea8fb5bfd617c0
Author: Poul-Henning Kamp <phk at FreeBSD.org>
Date:   Sat Oct 8 17:38:05 2011 +0000

    Make distcheck work again.

diff --git a/include/Makefile.am b/include/Makefile.am
index 9f317f4..e40ea2a 100644
--- a/include/Makefile.am
+++ b/include/Makefile.am
@@ -55,6 +55,7 @@ nobase_noinst_HEADERS = \
 	vss.h
 
 tbl/vrt_stv_var.h tbl/vcl_returns.h vcl.h vrt_obj.h: $(top_srcdir)/lib/libvcl/generate.py $(top_srcdir)/include/vrt.h
+	mkdir -p tbl
 	@PYTHON@ $(top_srcdir)/lib/libvcl/generate.py $(top_srcdir) $(top_builddir)
 
 BUILT_SOURCES = vcs_version.h vmod_abi.h