2. added wxFileType::GetOpenCommand() demo in the exec sample
3. "fixed" the error messages from wxExecute() - still no idea why it happens
though :-(
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@8588 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775