refactored BundleResolver to first find all requirements then explicitly sort them before resolving dependencies (FELIX-1664)
also minor refactoring to add isOptional/setOptional to parent IRequirementModelElement interface


git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@820299 13f79535-47bb-0310-9956-ffa450edef68
4 files changed