[PATCH v3 0/1] MR2689: findstr: Add basic functionality.

[Zhiyi Zhang (＠zhiyi)]

Company of Heroes: Battle of Crete needs a functioning findstr.exe to exit properly.
Freemake Video Converter 4.1 installer also needs this.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=35254

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  v3: findstr: Add basic functionality.
 
https://gitlab.winehq.org/wine/wine/-/merge_requests/2689