[SMX4-1685] Fix optional imports in spring-context-support 3.2.7.RELEASE bundle

git-svn-id: https://svn.apache.org/repos/asf/servicemix/smx4/bundles/trunk@1563669 13f79535-47bb-0310-9956-ffa450edef68
[SMX4-1685] Fix optional import in spring-expression 3.2.7.RELEASE bundle

git-svn-id: https://svn.apache.org/repos/asf/servicemix/smx4/bundles/trunk@1563677 13f79535-47bb-0310-9956-ffa450edef68