Update configure helper scripts to latest versions from GNU project.

Update configure helper scripts to latest versions from GNU project.

The new version (the one we used was 6 years out of date) notably detects 64
bit MinGW platforms correctly which closes #12356.

Also update config.{guess,sub} scripts in 3rd party libraries directories to
bring them all in sync with the main one and ensure that MinGW 64 is supported
by them too.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@66265 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775