- More reorganizations and fixes.

Fixed InterlockedCompareExchange prototype.

Implemented inter-process messaging.
Moved most message routines to dlls/user, and split off 16-bit
routines to a separate file.

Added support for loading JPEG, Bitmap and Icons from persistant
streams.
Implemented JPEG support using libjpeg, added necessary configure.in
options.
Added IConnectionPoint style notifications to the IPicture iface.
Implemented several of the stubs already there, added some more.

made sure that we have keyboard focus when using DirectX.

Enhanced process & thread display with process name.

Fixed buffer len passing to snprintf().

twice.

exist.

  message.
- Organize WM_NOTIFY processing in preparation for Unicode
- Implement TBN_GETDISPINFO and I_IMAGECALLBACK for bitmaps.
- Implement drawing of separator for TBSTYLE_DROPDOWN similar to native.
- Change drawing of buttons to support TBSTYLE_LIST and make match
  native pixel layout (with and without bitmaps).
- Change TOOLBAR_MeasureString to measure with DrawText like native.
  This eliminates extra space due to prefix char ("&").
- Speed up TOOLBAR_CalcStrings by doing the HDC and FONT selection once.
- Change calc of buttons to match drawing for TBSTYLE_LIST and
  separators.

  messages.
- Fixed remaining Toolbar and Pager notify dump amounts.
- Separate memory dump code for easy use.