ntdll: Add an optimisation for NtQueryDirectoryFile to not read the whole directory if the mask doesn't contain any wildcards and the file exists on in the directory with the same case as the mask.

[Robert Shearman]

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  dlls/ntdll/directory.c |   80 
++++++++++++++++++++++++++++++++++++++++++++++--
  1 files changed, 77 insertions(+), 3 deletions(-)
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