[evolution] Fix a build break in external-editor plugin.

[Matthew Barnes <mbarnes src gnome org>]

commit 1094408202211ff65114da99e95a57a73cc32735
Author: Matthew Barnes <mbarnes redhat com>
Date:   Tue May 5 08:26:29 2009 -0400

    Fix a build break in external-editor plugin.
---
 plugins/external-editor/Makefile.am |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/plugins/external-editor/Makefile.am b/plugins/external-editor/Makefile.am
index 0a39bc4..4373b81 100644
--- a/plugins/external-editor/Makefile.am
+++ b/plugins/external-editor/Makefile.am
@@ -15,6 +15,7 @@ INCLUDES =						\
 	-DLIBDIR=\""$(libdir)"\"			\
 	-I$(top_srcdir)					\
 	-I$(top_srcdir)/composer			\
+	-I$(top_srcdir)/widgets				\
 	$(SHELL_CFLAGS)					\
 	$(EVOLUTION_MAIL_CFLAGS)			\
 	$(E_UTIL_CFLAGS)