Added serial code for wxList and wxHashTable to source tree

  Added serial code for wxList and wxHashTable to source tree
  Added a few accessors to wxList (for above)
  Fixed bug with GetClientSize() and sunken frames without
  scrollbars
  Made pixel corrections to wxListCtrl and wxFrame
  Added a few pixels before first tool in toolbar
  Added a few wxCHECKs here and there

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@1121 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775