Fix filename completion that could cause a incorrect result when the path contains "dots". (See also HBelusca@d12169b.) See CORE-8623 and CORE-1901 (bug introduced in r25896 / 54cf74f). For example: - The current directory is `C:\Documents and Settings\Administrator\`, and you input `".` and press TAB. The completion result would be `".Administrator"`, which even does not exist. - You input "some(file).ext", and you remove the final quote (or the quote and "ext") and you attempt to complete the file name. - Import two additional fixes from HBelusca@a826730: Fix the search ordering in the comparisons between szSearch1, szSearch2 and szSearch3. Co-authored-by: Hermès BÉLUSCA - MAÏTO <hermes.belusca-maito@reactos.org>