Source code checked in, #111628

MrMAPI Folder bugs Problem: HrSplitPath corrupts memory Fix: Rewrite it, and most of MMFolder.cpp to wstring and stop manually manipulating string memory Problem: Hangs on exit when errors encountered Fix: Fix memory leak in HrMAPIFindSubFolderExW and HrMAPIOpenStoreAndFolder Problem: Crash exporting rules Fix: Add missing .c_str() to formatmessage call.