atlapp.h: Added more global support for original headers in VC6 and VC7.x

git-svn-id: http://svn.code.sf.net/p/wtl/code/trunk/wtl@533 4beafcb9-bf40-0410-b8f5-b741cf90ec0e
atlctrls.h: Added new Rich Edit messages for _RICHEDIT_VER >= 0x0800

git-svn-id: http://svn.code.sf.net/p/wtl/code/trunk/wtl@534 4beafcb9-bf40-0410-b8f5-b741cf90ec0e
atlctrls.h: Added CToolBarCtrl::GetItemDropDownRect()

git-svn-id: http://svn.code.sf.net/p/wtl/code/trunk/wtl@535 4beafcb9-bf40-0410-b8f5-b741cf90ec0e
atlctrls.h: Correction for CToolBarCtrl::GetItemDropDownRect()

git-svn-id: http://svn.code.sf.net/p/wtl/code/trunk/wtl@536 4beafcb9-bf40-0410-b8f5-b741cf90ec0e
atlapp.h: Correction for VersionHelpers.h

git-svn-id: http://svn.code.sf.net/p/wtl/code/trunk/wtl@537 4beafcb9-bf40-0410-b8f5-b741cf90ec0e
atltheme.h: Added new methods for Win8 + various corrections for versions and header varians

git-svn-id: http://svn.code.sf.net/p/wtl/code/trunk/wtl@538 4beafcb9-bf40-0410-b8f5-b741cf90ec0e