Add wxTimePickerCtrl class.

Implement wxTimePickerCtrl natively for MSW and add a generic implementation
(very loosely based on the original class by Paul Breen) for the other
platforms.

Also update the calendar sample to show the new control.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@69224 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/univ/setup0.h

@@ -866,6 +866,7 @@
 #define wxUSE_STATTEXT      1   // wxStaticText
 #define wxUSE_STATBMP       1   // wxStaticBitmap
 #define wxUSE_TEXTCTRL      1   // wxTextCtrl
+#define wxUSE_TIMEPICKCTRL  1   // wxTimePickerCtrl
 #define wxUSE_TOGGLEBTN     1   // requires wxButton
 #define wxUSE_TREECTRL      1   // wxTreeCtrl
 #define wxUSE_TREELISTCTRL  1   // wxTreeListCtrl