Regenerate configure after power sample addition to configure.in.

This should have been part of 77511, see #16413.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@77909 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Remove obsolete toolkits mentions from configure.

Cocoa, MGL and PM are not supported any more.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@77910 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775