[evolution] Don't require libpst to run distcheck.

[Matthew Barnes <mbarnes src gnome org>]

commit fb8a74a5c5583d7523b155bf74c1603b3a13baad
Author: Matthew Barnes <mbarnes redhat com>
Date:   Sat Oct 22 22:36:40 2011 -0400

    Don't require libpst to run distcheck.
    
    (Not available on Debian, which I happen to be using.)

 Makefile.am |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index e2e1b15..a5e0d9f 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -153,6 +153,7 @@ DISTCHECK_CONFIGURE_FLAGS =		\
 	--disable-scrollkeeper		\
 	--enable-test-component		\
 	--disable-image-inline		\
+	--disable-pst-import		\
 	--disable-weather		\
 	--with-help