Ramon unch lower with mmb fix

[RamonUnch]

On some windows such as Sumatra PDF, or Office 2010, by avoiding to get the ancestor window before the WM_NCHITTEST message. SumatraPDF discussion: https://github.com/sumatrapdfreader/sumatrapdf/issues/1979 I had to add the HitTestTimeout() function that checks the response of the WM_NCHITTEST on the pointed NChwnd, if it returns HTTRANSPARENT, then I check the parent window until there is a parent or the HitTest returned something different than Transparent.

PS: I also added the HTHELP (small interrogation dot [?] button in the title bar) to the area that lower the window.