[librsvg] build: Use local macros to detect vala

[Germán Poó Caamaño <gpoo src gnome org>]

commit 6c3b8eee243204678574e162b7d480f6f83b71e6
Author: Germán Poo-Caamaño <gpoo gnome org>
Date:   Tue Oct 29 13:05:39 2013 -0700

    build: Use local macros to detect vala
    
    Fixes build when vala < 0.19 is present.

 Makefile.am |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index d95f008..e881100 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -3,7 +3,7 @@ SUBDIRS = . gdk-pixbuf-loader tests tools doc
 NULL =
 BUILT_SOURCES =
 
-ACLOCAL_AMFLAGS = ${ACLOCAL_FLAGS}
+ACLOCAL_AMFLAGS = ${ACLOCAL_FLAGS} -I m4
 
 lib_LTLIBRARIES = librsvg- RSVG_API_MAJOR_VERSION@.la