(mail_SOURCES): Add page.c. Alphabetized sources.

@@ -36,12 +36,61 @@ mail_LDADD = \
 
 EXTRA_DIST = msgset.c
 
-mail_SOURCES = alias.c alt.c cd.c copy.c delete.c dp.c echo.c \
-  edit.c eq.c exit.c file.c folders.c followup.c from.c headers.c help.c \
-  hold.c if.c inc.c list.c mail.c mail.h mailline.c mbox.c msgset.y next.c \
-  pipe.c previous.c print.c quit.c reply.c retain.c save.c send.c set.c \
-  shell.c size.c source.c summary.c table.c tag.c top.c touch.c unalias.c \
-  undelete.c unset.c util.c var.c version.c visual.c write.c z.c decode.c \
-  setenv.c
+mail_SOURCES = \
+ alias.c\
+ alt.c\
+ cd.c\
+ copy.c\
+ decode.c\
+ delete.c\
+ dp.c\
+ echo.c\
+ edit.c\
+ eq.c\
+ exit.c\
+ file.c\
+ folders.c\
+ followup.c\
+ from.c\
+ headers.c\
+ help.c\
+ hold.c\
+ if.c\
+ inc.c\
+ list.c\
+ mail.c\
+ mail.h\
+ mailline.c\
+ mbox.c\
+ msgset.y\
+ next.c\
+ page.c\
+ pipe.c\
+ previous.c\
+ print.c\
+ quit.c\
+ reply.c\
+ retain.c\
+ save.c\
+ send.c\
+ set.c\
+ setenv.c\
+ shell.c\
+ size.c\
+ source.c\
+ summary.c\
+ table.c\
+ tag.c\
+ top.c\
+ touch.c\
+ unalias.c\
+ undelete.c\
+ unset.c\
+ util.c\
+ var.c\
+ version.c\
+ visual.c\
+ write.c\
+ z.c
 
 SUBDIRS = testsuite