[evolution] configure.ac: Mention libpst minimum version in error message.

[Matthew Barnes <mbarnes src gnome org>]

commit 9575c65bc3547786b2362223381a83e3db79ae60
Author: Matthew Barnes <mbarnes redhat com>
Date:   Tue Jan 17 09:54:35 2012 -0500

    configure.ac: Mention libpst minimum version in error message.

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 0c9ee13..8d5fbb4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1486,7 +1486,7 @@ if test "x$enable_pst" = "xyes"; then
 	if test "x$have_pst" = "xyes"; then
 		plugins_standard="$plugins_standard pst-import"
 	else
-		AC_MSG_ERROR([libpst is required for the pst-import plugin.  Use --disable-pst-import to exclude the plugin.])
+		AC_MSG_ERROR([libpst >= libpst_minimum_version is required for the pst-import plugin.  Use --disable-pst-import to exclude the plugin.])
 	fi
 fi