Non-standard abbreviations of words in function/variable names changed to standard...

Non-standard abbreviations of words in function/variable names changed to  standard abbreviations or the entire word (e.g. colNo is now colNum)
If SetColDef is called with an out of range index, the function in debug will throw an assert msg, and call wxLogDebug(), and then return without doing anything.  The function now returns a boolean to indicate if the column definition was successfully created or not

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@31178 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775