Make the release status obvious in the title area.

Doc/texinputs/howto.cls

@@ -61,7 +61,7 @@
   }}
   \begin{flushright}
     {\rm\Huge\py@HeaderFamily \@title} \par
-    {\em\large\py@HeaderFamily \py@release} \par
+    {\em\large\py@HeaderFamily \py@release\releaseinfo} \par
     \vspace{25pt}
     {\Large\py@HeaderFamily \@author} \par
     \vspace{25pt}

Doc/texinputs/manual.cls

@@ -75,7 +75,7 @@
     }}
     \begin{flushright}%
       {\rm\Huge\py@HeaderFamily \@title \par}%
-      {\em\LARGE\py@HeaderFamily \py@release \par}
+      {\em\LARGE\py@HeaderFamily \py@release\releaseinfo \par}
       \vfill
       {\LARGE\py@HeaderFamily \@author \par}
       \vfill\vfill