[Bug 38744] New: support _UNITY_NET_WORKAREA_REGION

https://bugs.winehq.org/show_bug.cgi?id=38744

Bug ID: 38744
           Summary: support _UNITY_NET_WORKAREA_REGION
           Product: Wine
           Version: 1.7.44
          Hardware: x86
                OS: Linux
            Status: NEW
          Keywords: download, source
          Severity: normal
          Priority: P2
         Component: winex11.drv
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

This would allow us to reliably determine the work area in multiple monitor
systems (at least when the WM supports the property), which we can't do
currently due to limitations of _NET_WORKAREA.

This matters because applications can react poorly to being assigned a
different size/position when maximized than they expect. (Example: Excel 2010
in "fullscreen" mode.)

The work area can be tested by unchecking "Allow the window manager to control
the windows" in winecfg and then maximizing a window (such as notepad).