parameter-framework: Changed criterion interface

BZ: 9561

- separated selection criterion change event indication form configuration application requests in different APIs
- added a way to retrieve selection criterion from its name
- updated version number 0.2.1

Change-Id: Icf4560fe67001655a171401f106296b9aa09afb3
Orig-Change-Id: I8dfb05ba1e704888c5c1ff9268a2a2e9a46af9bb
Signed-off-by: Patrick Benavoli <patrickx.benavoli@intel.com>
Reviewed-on: http://android.intel.com:8080/20208
Reviewed-by: Barthes, FabienX <fabienx.barthes@intel.com>
Tested-by: Barthes, FabienX <fabienx.barthes@intel.com>
Reviewed-by: buildbot <buildbot@intel.com>
Tested-by: buildbot <buildbot@intel.com>
diff --git a/parameter/SelectionCriteria.cpp b/parameter/SelectionCriteria.cpp
index 9377e31..d0b5766 100644
--- a/parameter/SelectionCriteria.cpp
+++ b/parameter/SelectionCriteria.cpp
@@ -56,11 +56,10 @@
     return getSelectionCriteriaDefinition()->createSelectionCriterion(strName, pSelectionCriterionType);
 }
 
-// Subscription
-void CSelectionCriteria::setObserver(ISelectionCriterionObserver* pSelectionCriterionObserver)
+// Selection criterion retrieval
+CSelectionCriterion* CSelectionCriteria::getSelectionCriterion(const string& strName)
 {
-    // Delegate
-    getSelectionCriteriaDefinition()->setObserver(pSelectionCriterionObserver);
+    return getSelectionCriteriaDefinition()->getSelectionCriterion(strName);
 }
 
 // List available criteria