[Bug 42870] New: CurrentBuild registry value is missing

https://bugs.winehq.org/show_bug.cgi?id=42870

Bug ID: 42870
           Summary: CurrentBuild registry value is missing
           Product: Wine
           Version: 2.6
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: registry
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ArchLinux

In HKLM\Software\Microsoft\Windows NT\CurrentVersion, all Windows versions
since at least Windows XP have a "CurrentBuild" registry string value (aside
from "CurrentBuildNumber").

In Wine's registry, there exists only "CurrentBuildNumber".

For maximum compatibility, the "CurrentBuild" value should exist and be
created/updated by winecfg when switching Windows versions. It should have the
same value as the "CurrentBuildNumber", for example on Windows 7 SP1:

CurrentBuildNumber = "7601"
CurrentBuild = "7601"  <-- this value is missing