Update old tests
Update the IndexTest and OccurrenceCollector test such that it creates the
source files and projects in the test rather than having them in the filesystem. I.e.
improve the tests to be more like SearchPresentationCompilerTest
source files and projects in the test rather than having them in the filesystem. I.e.
improve the tests to be more like SearchPresentationCompilerTest
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In scala-ide:a6902054a2b9937f8425f514ee56277abaad5326 Can now find sub-types of a given type
Extended the SearchPresentationCompiler, Finder, and SourceIndexer
so they're now able to find sub-types of a given type.
Also re-wrote some of the earlier test classes so they now reflect
the newer ways of writing tests; this is one of the reasons this
commit is so large. Sorry.
Fixes #1001755 #1001725