Fix INCFLAGS for VPATH builds.

This commit was SVN r5083.

config/mca_configure.ac

@@ -295,7 +295,7 @@ if test -z "$with_openmpi"; then
 
         top_ompi_srcdir='$(top_srcdir)/../../../..'
         top_ompi_builddir='$(top_builddir)/../../../..'
-        INCFLAGS='-I$(top_ompi_srcdir)/src -I$(top_ompi_srcdir)/include -I$(top_ompi_builddir)/src'
+        INCFLAGS='-I$(top_ompi_srcdir)/src -I$(top_ompi_srcdir)/include -I$(top_ompi_builddir)/src -I$(top_ompi_builddir)/include'
         found_ompi_headers=1
         AC_MSG_RESULT([already in Open MPI source tree])
     fi