Add wx.ModalDialogHook

git-svn-id: http://svn.wxwidgets.org/svn/wx/wxPython@74117 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
just use 6 build jobs instead of all 8

git-svn-id: http://svn.wxwidgets.org/svn/wx/wxPython@74118 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775