[SHELL32] Tweak formatting and logging

Some style-improvements I wanted to apply before a planned backport.
E.g. The biggest source-file CDefView.cpp in [SHELL32] can be shrinked considerably by stripping some outdated
comments from 10 and more years ago, when this class was still non-OOP and named ShellView.
Less excessive line-lengths also here and there.

In case it is not obvious when reviewing: In the beginning of CDevView.cpp in the declaration-part I just
reduced the indentation-level by 4 spaces for a big block.

Some shell classes were touched during 0.4.15-dev'ing for fixes like the 'unkown'-typo in
0.4.15-dev-6323-g 3854a5d8e9 for example
or missing \n were added to dbgprints like in
0.4.15-dev-4492-g 03422451b3
Touched again here, because I want to port those improvements back,
but don't intend to increase the size in older releases.

The commit looks big, but does consist solely of trivialities.
There is no functional change in this commit, aside the logging ofc.

dll/win32/shell32/CDefaultContextMenu.cpp

@@ -1193,7 +1193,7 @@ CDefaultContextMenu::TryToBrowse(
     hr = SHILCombine(m_pidlFolder, pidlChild, &pidl);
     if (FAILED_UNEXPECTEDLY(hr))
         return hr;
-    
+
     hr = psb->BrowseObject(pidl, wFlags & ~SBSP_RELATIVE);
     ILFree(pidl);
     return hr;