Don't use the standard containers by default.

Don't use the standard containers by default.

Revert the change of wxUSE_STD_CONTAINERS to 1 by default as this introduces
more incompatibilities which risk hamper upgrading to 3.0 unnecessarily.

Update the documentation to better explain why do the non-standard container
classes exist in wxWidgets and, especially, that they shouldn't be used when
possible. Also document the differences between the normal and STL containers
build in the manual.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@67735 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775