fix the incoherence pointed out by ifacecheck between wx docs, that documents usage...

fix the incoherence pointed out by ifacecheck between wx docs, that documents usage of the wxFontFamily, wxFontStyle and wxFontWeight enums in wxFont setters and getters, and the actual sources, which use 'int' instead; provided the same backward-compatibility pattern already used for wxBrush,wxPen both against 'int' overloads and against the wxDeprecatedGUIConstants enum values

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@56664 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775