appdata: Add autotool bits for appdata

Makefile.am

@@ -10,6 +10,11 @@ DISTCHECK_CONFIGURE_FLAGS = \
 	--disable-silent-rules \
 	--with-gtk=2.0
 
+@INTLTOOL_XML_RULE@
+appdatadir = $(datadir)/appdata
+appdata_in_files = mate-terminal.appdata.xml.in
+appdata_DATA = $(appdata_in_files:.xml.in=.xml)
+
 desktopdir = $(datadir)/applications
 desktop_in_files = @PACKAGE@.desktop.in.in
 desktop_DATA = $(desktop_in_files:.desktop.in.in=.desktop)
@@ -26,10 +31,12 @@ EXTRA_DIST = 			\
 	xmldocs.make		\
 	omf.make		\
 	mate-terminal.wrapper   \
+	$(appdata_in_files)	\
 	$(man_MANS)		\
 	$(NULL)
 
 CLEANFILES = \
+	mate-terminal.appdata.xml \
 	$(desktop_DATA)	\
 	$(NULL)
 

po/POTFILES.in

@@ -1,6 +1,7 @@
 [encoding: UTF-8]
 # List of source files containing translatable strings.
 # Please keep this file sorted alphabetically.
+mate-terminal.appdata.xml.in
 mate-terminal.desktop.in.in
 src/eggsmclient.c
 src/org.mate.terminal.gschema.xml.in