Added support for RichEdit 4.1 (RICHEDIT50 and MsftEdit.dll) to CRichEditCtrl and set _RICHEDIT_VER to 0x0500 in AppWizard

git-svn-id: http://svn.code.sf.net/p/wtl/code/trunk/wtl@571 4beafcb9-bf40-0410-b8f5-b741cf90ec0e
atlctrls.h: Correction for RichEdit 4.1 for non-Unicode

git-svn-id: http://svn.code.sf.net/p/wtl/code/trunk/wtl@572 4beafcb9-bf40-0410-b8f5-b741cf90ec0e
Improved CEdit::GetMargins() and SetMargins()
Restricted CRichEditCtrl::GetWordBreakProcEx() and SetWordBreakProcEx() to RE 1.0
Added CRichEditCtrl::GetWordBreakProc() and SetWordBreakProc() for RE 2.0 or higher
Added CRichEditCtrl::SetMargins() for RE 3.0 or higher

git-svn-id: http://svn.code.sf.net/p/wtl/code/trunk/wtl@573 4beafcb9-bf40-0410-b8f5-b741cf90ec0e