manifest in autoproj-1.1.0

- old
+ new

@@ -1,5 +1,5 @@
-sources:
+package_sets:
 # Example source from a git repository
 #   - type: git
 #     url: git://github.com/doudou/autoproj.orocos.git
 #
 # If you want to enable only a subset of the listed sources,