Mm compatibility fix

[Larry Jones]

The mm macros support the traditional AT&T names for the page headers
(}t, }e, and }o) but not the footers.

Index: contrib/mm/m.tmac
===================================================================
RCS file: /sources/groff/groff/contrib/mm/m.tmac,v
retrieving revision 2.40
diff -u -r2.40 m.tmac
--- contrib/mm/m.tmac   2 Jun 2010 14:13:41 -0000       2.40
+++ contrib/mm/m.tmac   4 Jun 2010 15:11:17 -0000
@@ -1199,6 +1199,9 @@
 .als TPeh pg*even-header
 .als TPoh pg*odd-header
 .\"
+.als }b pg*footer
+.als }f pg*even-footer
+.als }p pg*odd-footer
 .als EOPf pg*footer
 .als EOPef pg*even-footer
 .als EOPof pg*odd-footer
-- 
Larry Jones

Mom would be a lot more fun if she was a little more gullible. -- Calvin