8031569: Refactor javac scope implementation to enable lazy imports
Summary: Introducing an internal API for Scope; rewriting ImportScopes to extend CompoundScopes.
Reviewed-by: mcimadamore, jjg, jfranck
Contributed-by: maurizio.cimadamore@oracle.com, jan.lahoda@oracle.com
./HelloWorld.html
./allclasses-frame.html
./allclasses-noframe.html
./constant-values.html
./deprecated-list.html
./help-doc.html
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./index.html
./overview-tree.html
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./resources/inherit.gif
./stylesheet.css