will work even when autoconf is not 2.59 (e.g. it is 2.61)
Updated configure pending release such that it shows the real svn Id of
the configure.in it was generated from.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_8_BRANCH@48446 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775