javaws 1.0 will not append the "current-version-id=X.X" field to an http
request when requesting one version of a resource when another version is in
the cache. This prevents a servlet from sending jardiff files to use
incremental updates. Instead, the whole request jar is downloaded.
BugTraq+ Release Management Values
COMMIT TO FIX:
This is caused by DiskCache.getCachedEntries() pruning out all the non-matching
Fixed by adding one more arg, boolean exact, to getCachedEntries, if set true
it will act as before, if false, will leave one (if lesser version exists)
non-matching entry in the list if no entries match.