Add queries on hoa://Test/Vfs/.

Example:
    * `hoa://Test/Vfs/Foo.bar?mtime=42&permissions=0644`
      returns pathname to a file with a mtime sets to 42 and permissions
      set to 0644.

So far `atime`, `ctime`, `mtime` and `permissions` are supported.
[auto] Merge from Test

    • #6934f9f — Add queries on hoa://Test/Vfs/. (Ivan Enderlin, 2014-10-09)

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Merge branch 'master' of /var/lib/git/repositories/Library/Test