[PATCH v2 0/5] MR1756: ntdll: Various performance improvements to hash_short_file_name.

[Rémi Bernon]

The function is called a lot, I believe something like this would improve its performance in general.

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  v2: ntdll: Lookup extension from the end in hash_short_file_name.
      ntdll: Use invalid char lookup table in lookup_unix_name.
      ntdll: Use invalid char lookup table in nt_to_unix_file_name_no_root.
      ntdll: Use invalid char lookup table in is_legal_8dot3_name.
      ntdll: Use invalid char lookup table in is_invalid_dos_char.
 
https://gitlab.winehq.org/wine/wine/-/merge_requests/1756