[evolution] Add an AppData description for Evolution.

[Matthew Barnes <mbarnes src gnome org>]

commit 2a6eb7c4d6d02daa60f81268d50e366738a86206
Author: Matthew Barnes <mbarnes redhat com>
Date:   Sat Sep 7 10:50:34 2013 -0400

    Add an AppData description for Evolution.
    
    Based on http://people.freedesktop.org/~hughsient/appdata/.

 data/Makefile.am           |    4 ++++
 data/evolution.appdata.xml |   18 ++++++++++++++++++
 2 files changed, 22 insertions(+), 0 deletions(-)
---
diff --git a/data/Makefile.am b/data/Makefile.am
index 1bc90ca..62dca8b 100644
--- a/data/Makefile.am
+++ b/data/Makefile.am
@@ -4,6 +4,9 @@ desktopdir = $(datadir)/applications
 desktop_in_files = evolution.desktop.in
 desktop_DATA = $(desktop_in_files:.desktop.in=.desktop)
 
+appdatadir = $(datadir)/appdata
+appdata_DATA = evolution.appdata.xml
+
 autostartdir = $(sysconfdir)/xdg/autostart
 autostart_in_files = evolution-alarm-notify.desktop.in
 autostart_DATA = $(autostart_in_files:.desktop.in=.desktop)
@@ -65,6 +68,7 @@ CLEANFILES =                                  \
        $(desktop_DATA)
 
 EXTRA_DIST =                                   \
+       $(appdata_DATA)                         \
        $(autostart_in_files)                   \
        $(desktop_in_files)                     \
        $(convert_DATA)                         \
diff --git a/data/evolution.appdata.xml b/data/evolution.appdata.xml
new file mode 100644
index 0000000..a4b6501
--- /dev/null
+++ b/data/evolution.appdata.xml
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<application>
+<id type="desktop">evolution.desktop</id>
+<licence>CC0</licence>
+<description>
+<p>
+Evolution is a personal information management application that provides integrated mail, calendaring and 
address book functionality.
+</p>
+<p>
+Evolution supports a wide range of industry standard data formats and network protocols for information 
exchange, with an emphasis on standards compliance and security.  Evolution can also integrate smoothly with 
Microsoft Exchange by way of the "Exchange Web Services" (EWS) extension.
+</p>
+</description>
+<url type="homepage">https://live.gnome.org/Apps/Evolution</url>
+<screenshots>
+  <screenshot 
type="default">https://wiki.gnome.org/Apps/Evolution/Screenshots?action=AttachFile&amp;do=get&amp;target=evolution_mail.png</screenshot>
+</screenshots>
+<updatecontact>evolution-hackers_at_gnome.org</updatecontact>
+</application>