upgrade pax exam version

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@1522043 13f79535-47bb-0310-9956-ffa450edef68
fix one possible partial initialization problem

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@1522044 13f79535-47bb-0310-9956-ffa450edef68
FELIX-3651 components using factory pids can't fall back on less specific targeted pids when a configuration is deleted

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@1522045 13f79535-47bb-0310-9956-ffa450edef68
FELIX-4223 Dependency manager targets should be set during enable; setting during activate leads to race conditions.  Also prevent activation during modification of target properties.

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@1522046 13f79535-47bb-0310-9956-ffa450edef68