CESDKHandler now retrieves available WEC2013 SDKs from the registry and
assembles a working build environment.
Change-Id: Ifa70f53aca9d1bf2fadf178a331f46c1efca90ff
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
Reviewed-by: Joerg Bornemann <joerg.bornemann@theqtcompany.com>