r25511 didn't fully fix the OPAL_CHECK_VISIBILITY issue; we also need

to -I the opal/config directory so that autoregen can find our .m4
files. 

This commit was SVN r25564.

The following SVN revision numbers were found above:
  r25511 --> open-mpi/ompi@5751c45916

opal/mca/event/libevent2013/libevent/autogen.sh

@@ -1,6 +1,14 @@
 #!/bin/sh
+###################################
+# Open MPI change: add -I for our m4 directory so that we can
+# find OPAL_CHECK_VISIBILITY
+###################################
+OMPI="-I ../../../../../opal/config"
 if [ -x "`which autoreconf 2>/dev/null`" ] ; then
-   exec autoreconf -ivf
+   ###################################
+   # Open MPI change: add -I for our m4 directory
+   ###################################
+   exec autoreconf -ivf $OMPI
 fi
 
 LIBTOOLIZE=libtoolize
@@ -8,8 +16,11 @@ SYSNAME=`uname`
 if [ "x$SYSNAME" = "xDarwin" ] ; then
   LIBTOOLIZE=glibtoolize
 fi
-aclocal -I m4 && \
+###################################
+# Open MPI change: add -I for our m4 directory
+###################################
+aclocal -I m4 $OMPI && \
 	autoheader && \
 	$LIBTOOLIZE && \
-	autoconf && \
+	autoconf $OMPI && \
 	automake --add-missing --force-missing --copy