base.bbclass: depchains: don't -destructively- set the pkg's RRECOMMENDS.

git-svn-id: https://svn.o-hand.com/repos/poky/trunk@824 311d38ba-8fff-0310-9ca6-ca027cbcb966

meta/classes/base.bbclass

@@ -606,6 +606,9 @@ def explode_deps(s):
 			r.append(i)
 	return r
 
+def packaged(pkg, d):
+	import os, bb
+	return os.access(bb.data.expand('${STAGING_DIR}/pkgdata/runtime/%s.packaged' % pkg, d), os.R_OK)
 
 def read_pkgdatafile(fn):
 	pkgdata = {}