classes: Rework core dependencies to work properly at the task level

git-svn-id: https://svn.o-hand.com/repos/poky/trunk@1427 311d38ba-8fff-0310-9ca6-ca027cbcb966

meta/classes/rootfs_deb.bbclass

@@ -1,5 +1,5 @@
-DEPENDS_prepend = "dpkg-native apt-native fakeroot-native "
-DEPENDS_append = " ${EXTRA_IMAGEDEPENDS}"
+
+do_rootfs[depends] += "dpkg-native:do_populate_staging apt-native:do_populate_staging"
 
 fakeroot rootfs_deb_do_rootfs () {
 	set +e