[evolution] Include 'tests' folder in the distribution tarball

[Milan Crha <mcrha src gnome org>]

commit 91c1a679ba154516f8b52dee0cd8de0c6e2819c8
Author: Milan Crha <mcrha redhat com>
Date:   Wed Jul 30 11:16:22 2014 +0200

    Include 'tests' folder in the distribution tarball
    
    Without that build with configure option --enable-installed-tests fails.

 Makefile.am |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index cfefa7c..66981c5 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -32,7 +32,8 @@ EXTRA_DIST =                  \
        intltool-merge.in       \
        intltool-update.in      \
        intltool-extract.in     \
-       gtk-doc.make
+       gtk-doc.make            \
+       tests
 
 if ENABLE_SMIME
 SMIME_SUBDIR=smime