public static Map findAllRelative(URI source,
Copies the schema or wsdl at the source URI to the target URI, along
with any relative references. The target URI should be a file URI.
If doCopy is false, the file copies are not actually done; the map
returned just describes the copies that would have been done.
source - an arbitrary URI describing a source Schema or WSDL
target - a file URI describing a target filename
a map of all the source/target URIs needed to copy
the file along with all its relative referents.