Spotted by Marcus Meissner and Coverity.

user32: Don't paint to the surface if the window has a pixel format, regardless of the state of the top parent.

Allow fractions of WHEEL_DELTA to scroll fractions of SPI_GETWHEELSCROLLLINES,
although still only whole lines.  Keep the remainder and apply it to next
event if in same direction.

Allow fractions of WHEEL_DELTA to scroll fractions of SPI_GETWHEELSCROLLLINES,
although still only whole lines.  Keep the remainder and apply it to next
event if in same direction.

Allow fractions of WHEEL_DELTA to scroll fractions of SPI_GETWHEELSCROLLLINES,
although still only whole lines.  Keep the remainder and apply it to next
event if in same direction.

Allow fractions of WHEEL_DELTA to scroll fractions of SPI_GETWHEELSCROLLLINES,
although still only whole lines.  Keep the remainder and apply it to next
event if in same direction.

Based on original fix proposded by Wojciech Pyczak.

We need the format to exist in apply_format_fixups() in particular.

atl100: Added AtlComModuleRegisterClassObjects implementation (based on AtlModuleRegisterClassObjects).

ole32: Avoid a deadlock when a being loaded DLL calls CoRegisterClassObject from its DLL_PROCESS_ATTACH handler.