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/SelectionCriteriaDefinition.cpp b/parameter/SelectionCriteriaDefinition.cpp
index e23f326..5a9855a 100644
--- a/parameter/SelectionCriteriaDefinition.cpp
+++ b/parameter/SelectionCriteriaDefinition.cpp
@@ -56,19 +56,9 @@
     return static_cast<const CSelectionCriterion*>(findChild(strName));
 }
 
-// Subscription
-void CSelectionCriteriaDefinition::setObserver(ISelectionCriterionObserver* pSelectionCriterionObserver)
+CSelectionCriterion* CSelectionCriteriaDefinition::getSelectionCriterion(const string& strName)
 {
-    // Propagate
-    uint32_t uiNbChildren = getNbChildren();
-    uint32_t uiChild;
-
-    for (uiChild = 0; uiChild < uiNbChildren; uiChild++) {
-
-        CSelectionCriterion* pSelectionCriterion = static_cast<CSelectionCriterion*>(getChild(uiChild));
-
-        pSelectionCriterion->setObserver(pSelectionCriterionObserver);
-    }
+    return static_cast<CSelectionCriterion*>(findChild(strName));
 }
 
 // List available criteria