Out of tree build. Partial fix for Bug 333628.

Patch by Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>.
Partial fix. make && make check now works with builddir != srcdir.
But make regtest doesn't yet.

git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13949 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/Makefile.tool-tests.am b/Makefile.tool-tests.am
index 299ba7b..6521afb 100644
--- a/Makefile.tool-tests.am
+++ b/Makefile.tool-tests.am
@@ -5,6 +5,7 @@
 AM_CPPFLAGS = -I$(top_srcdir) -I$(top_srcdir)/include \
 		-I$(top_srcdir)/coregrind -I$(top_builddir)/include \
 		-I$(top_srcdir)/VEX/pub \
+		-I$(top_builddir)/VEX/pub \
 		-DVGA_@VGCONF_ARCH_PRI@=1 \
 		-DVGO_@VGCONF_OS@=1 \
 		-DVGP_@VGCONF_ARCH_PRI@_@VGCONF_OS@=1 \