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platform: restore throwing exception when creating Single/MultipleRootFileProvider for injected contents

Review ID: IDEA-CR-29835

Fixes some failing cases of target replacement (IDEA-146380)

because some packages like mypy can actually install their resources
there, and it breaks our detection of built-in and third-party packages.
On Windows this check doesn't make sense since there site-packages
and copied stdlib modules lie directly inside "Lib", i.e. there is no
additional level of nesting.

while deciding whether we should use the bundled virtualenv or venv
module of Python 3.3+. Previously we incorrectly thought that every
detected interpreter has the default 2.7 version, since this kind
of interpreter doesn't store its version when discovered.

IDEA-181303 java.lang.IllegalArgumentException by org.jetbrains.org.objectweb.asm.ClassVisitor while running JUnit tests with latest EAP

* we should track rename/movement events for parents as well

EA-116756 - assert: ChangeListWorker.registerChangeTracker
EA-116749 - assert: ChangeListWorker.unregisterChangeTracker

follow-up: b3967042

* do not deduce old and new paths from event
* reduce problems, caused by unhandled VirtualFile rename

EA-116756 - assert: ChangeListWorker.registerChangeTracker
EA-116749 - assert: ChangeListWorker.unregisterChangeTracker

follow-up: b3967042