xz_utils: add expander rules file

Untested.

app-arch/xz_utils/sources/xz_utils-expander-rules

@@ -0,0 +1,3 @@
+"application/x-xz"	.tar.xz	"tar -Jtvf %s"	"tar -Jxvf %s"
+"application/x-xz"	.txz	"tar -Jtvf %s"	"tar -Jxvf %s"
+"application/x-xz"	.xz	"echo %s | sed 's/.xz$//g'"	"xz -df %s"

app-arch/xz_utils/xz_utils-5.0.1.recipe

@@ -8,7 +8,7 @@ LICENSE="
 	GNU GPL v3
 	"
 COPYRIGHT="2005-2011 Lasse Collin"
-REVISION="2"
+REVISION="3"
 ARCHITECTURES="!x86_gcc2 ?x86"
 
 PROVIDES="
@@ -65,6 +65,10 @@ BUILD()
 INSTALL()
 {
 	make install
+
+	expanderRulesDir=$dataDir/expander/rules
+	mkdir -p $expanderRulesDir
+	cp "$portDir/sources/xz_utils-expander-rules" "$expanderRulesDir/xz_utils"
 }
 
 TEST()