Restore dynamic linking of GDI functions for non-MSVC.

This partially reverts the changes of r77029 and r77039: now functions such as
Set/GetLayout(), AlphaBlend() and GradientFill() are still called (almost)
directly when using MSVC but pass by dynamic loading with the other compilers,
which don't have #pragma comment(lib) and, in MinGW case, also lack some of
these functions in their libraries even if we do link with them.

Closes #16411.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@77068 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Add support for paragraph spacing attribute to wxTextCtrl in wxMSW.

Use PFM_SPACEAFTER/PFM_SPACEBEFORE to implement support for them.

Closes #16417.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@77070 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775