[class.this] Cleanup verbose and redundant exposition.

Author: jensmaurer

source/classes.tex

@@ -1057,14 +1057,10 @@
 keyword \tcode{this} is a prvalue whose value is
 a pointer to the object for which the function is called.
 \indextext{\idxcode{this}!type of}%
-The type of \tcode{this} in a member function of a class \tcode{X} is
-\tcode{X*}.
-If the member function is declared \tcode{const}, the type of
-\tcode{this} is \tcode{const} \tcode{X*},
-if the member function is declared \tcode{volatile}, the type of
-\tcode{this} is \tcode{volatile} \tcode{X*}, and if the member function
-is declared \tcode{const} \tcode{volatile}, the type of \tcode{this} is
-\tcode{const} \tcode{volatile} \tcode{X*}.
+The type of \tcode{this} in a member function
+whose type has a \grammarterm{cv-qualifier-seq} \cv{} and
+whose class is \tcode{X}
+is ``pointer to \cv{} \tcode{X}''.
 \begin{note}
 Thus in a const member function, the object for which the function is
 called is accessed through a const access path.
@@ -1089,9 +1085,11 @@
 \end{example}
 
 \pnum
+\begin{note}
 Similarly, \tcode{volatile} semantics\iref{dcl.type.cv} apply in
 volatile member functions when accessing the object and its
 non-static data members.
+\end{note}
 
 \pnum
 A member function whose type has a \grammarterm{cv-qualifier-seq} \cvqual{cv1}