Include camel/camel.h instead of specific headers; the latter is
forbidden in evolution-data-server 2.32.

--- mail-notification-5.4.dfsg.1.orig/src/mn-evolution-message.gob
+++ mail-notification-5.4.dfsg.1/src/mn-evolution-message.gob
@@ -23,7 +23,7 @@
 
 %{
 #include <glib/gi18n.h>
-#include <camel/camel-folder-summary.h>
+#include <camel/camel.h>
 #include "mn-evolution-mailbox.h"
 #include "mn-message-private.h"
 #include "mn-evolution-client.h"
--- mail-notification-5.4.dfsg.1.orig/src/mn-evolution-plugin.c
+++ mail-notification-5.4.dfsg.1/src/mn-evolution-plugin.c
@@ -24,7 +24,7 @@
 #include <dbus/dbus.h>
 #include <dbus/dbus-glib-lowlevel.h>
 #include <dbus/dbus-glib-bindings.h>
-#include <camel/camel-folder.h>
+#include <camel/camel.h>
 #include <mail/em-event.h>
 #include <mail/mail-tools.h>
 #include "mn-evolution.h"
--- mail-notification-5.4.dfsg.1.orig/src/mn-evolution-server.gob
+++ mail-notification-5.4.dfsg.1/src/mn-evolution-server.gob
@@ -26,7 +26,7 @@
 #include <libintl.h>
 #include <gobject/gvaluecollector.h>
 #include <libedataserver/eds-version.h>
-#include <camel/camel-folder.h>
+#include <camel/camel.h>
 #if EDS_CHECK_VERSION(2,29,0)
 #include <shell/e-shell.h>
 #include <mail/e-mail-browser.h>