Fix alpha after drawing a bitmap with alpha on a purely RGB bitmap in wxMSW.

Previously, the area of the bitmap outside of the rectangle covered by the
bitmap being drawn became completely transparent, "losing" the original bitmap
contents. This was due to some pixels of the bitmap having non-0 alpha value
after AlphaBlend() call, as it updates both the colours and alpha of the
destination. As there doesn't seem to be any way to prevent it from doing
this, just reset alpha back to 0 after calling it to avoid the problem.

Closes #14403.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@75566 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Fix handling of bitmaps with alpha channel in wxMSW wxImageList.

Don't use mask and alpha together, this results in visual artefacts and masks
are unnecessary with RGBA bitmaps anyhow.

The only potentially problematic remaining case is mixing bitmaps with alpha
and mask inside the same image list (as we need to indicate whether we use the
mask or not when creating it), but this should probably be rare and in the
meanwhile we can at least RGBA bitmaps with image lists, which includes doing
this implicitly when they are used as button bitmaps.

Also refactor wxBitmap code to extract part of CopyFromIconOrCursor() to allow
reusing it in the newly added MSWUpdateAlpha().

See #11476.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@75567 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Disable the use of compiler TLS by default under Windows.

While compiler TLS support is simpler to use and much faster than using our
own Win32 API-based TLS implementation, it results in difficult to debug
crashes when used inside a dynamically loaded DLL under Windows XP, so disable
it by default to be safe.

Closes #13116.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@75568 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Fix benchmarks compilation with WXWIN_COMPATIBILITY_2_8 set to 0.

Include wx/crt.h explicitly to be able to use wxPrintf() and friends.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@75569 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Fix check for the item being checked when appending it under wxMSW.

The changes of r75448 were wrong, we can't ask Windows for the item state
before attaching it to the menu, so just check the internal flag here.

See ##15748.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@75570 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Disable wxUSE_PREFERENCES_EDITOR in correct place in wxiOS.

wx/osx/setup0.h is auto-generated, so r74708 shouldn't have changed it as the
change was overwritten by r75568 which regenerated that file. Instead, disable
wxUSE_PREFERENCES_EDITOR in iPhone-specific file.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@75571 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Fix compilation on OpenVMS id the logical CONFIG is defined

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@75572 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775