Avoid including pipe stream headers when streams are disabled.

Fixes compilation with wxUSE_STREAMS==0.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74529 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Fix wxGTK compilation in wxUSE_MENUS==0 case.

Add missing check for it to wxWindow::DoFindFocus().

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74530 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Fix new wxExecute() code compilation with wxUSE_CONSOLE_EVENTLOOP==0.

Nothing is going to work without the console apps/base traits support for the
event loop but at least make it compile.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74531 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Add wxUSE_PREFERENCES_EDITOR and the corresponding configure option.

This was somehow forgotten when wxPreferencesEditor was added.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74532 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775