[evolution-ews] build: Add ACLOCAL_AMFLAGS to Makefile.am

[Philip Withnall <pwithnall src gnome org>]

commit 1befe740d9ce18f31705bd451c9dcf4689f0ea55
Author: Philip Withnall <philip tecnocode co uk>
Date:   Tue Oct 1 18:20:23 2013 +0100

    build: Add ACLOCAL_AMFLAGS to Makefile.am
    
    This ensures that the evo_krb5_support.m4 macro is visible to aclocal.

 Makefile.am |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index 2786a11..1eec1a9 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,3 +1,5 @@
+ACLOCAL_AMFLAGS = -I m4 ${ACLOCAL_FLAGS}
+
 NULL =
 
 SUBDIRS = src po