[pinpoint] build: Allow the user to inject aclocal include path when running autogen.sh

[Damien Lespiau <dlespiau src gnome org>]

commit 5a1f7de826923ced869fa09585cbeb9d7db2b6be
Author: Damien Lespiau <damien lespiau intel com>
Date:   Mon May 23 21:49:55 2011 +0100

    build: Allow the user to inject aclocal include path when running autogen.sh
    
    When having your m4 macros in non a standard location, say, when compiling the
    whole stack from scratch in a separate prefix, allow the user to inject custom
    "-I /foo/blah" argument to aclocal when run from autoreconf.

 Makefile.am |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index d100ac1..3cb76c6 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -2,7 +2,7 @@ SUBDIRS=transitions
 bin_PROGRAMS=pinpoint
 
 AM_CFLAGS = $(DEPS_CFLAGS) $(MAINTAINER_FLAGS) -D_GNU_SOURCE -DPKGDATADIR=\"$(pkgdatadir)/\"
-ACLOCAL_AMFLAGS = -I m4
+ACLOCAL_AMFLAGS = -I m4 ${ACLOCAL_FLAGS}
 
 if USE_DAX
 DAX_SOURCES = pp-super-aa.c pp-super-aa.h