Bug fixes to flex_string submitted by Harmut Kaiser, Jean-Francois Bastien, and Andrew Barnert

git-svn-id: svn://svn.code.sf.net/p/loki-lib/code/trunk@836 7ec92016-0320-0410-acc4-a06ded1c099a

include/loki/flex/cowstringopt.h

@@ -131,6 +131,8 @@ private:
             Align align_;
         } temp;
 
+	--(*Data().begin()); // Harmut Kaiser fix:
+			     // decrement the use count of the remaining object
         new(buf_) Storage(
             *new(temp.buf_) Storage(Data()), 
             flex_string_details::Shallow());