don't define wxEventLoop class differently in GUI and base, this breaks the

don't define wxEventLoop class differently in GUI and base, this breaks the
ODR and hence results in many problems in practice; instead use wxEventLoopBase
whenever possible and #define wxEventLoop differently in console applications

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@46158 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775