Rewrite UnixGlob without Bazel VFS
Rewrite UnixGlob without Bazel VFS

Summary:
Mechanically inline/translate Bazel VFS calls to Java IO calls.

The diff intentionally does not try to simplify code to the change safer and easier to review.

Note in Buck we used simpler `JavaIoFileSystem` implementation of `FileSystem` which made translation quite straightforward.

Reviewed By: bobyangyf

shipit-source-id: 6883bbaf15050230d4b1446a0e7d3c50b0354549

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