reiserfsprogs: autogenerate the version number in the man pages

The version string in the man pages was manually updated. Now it updates
when configure runs.

Signed-off-by: Jeff Mahoney <jeffm@suse.com>

mkreiserfs/mkreiserfs.8.in

@@ -1,7 +1,7 @@
 .\" -*- nroff -*-
 .\" Copyright 1996-2004 Hans Reiser.
 .\" 
-.TH MKREISERFS 8 "January 2009" "Reiserfsprogs-3.6.23"
+.TH MKREISERFS 8 "January 2009" "Reiserfsprogs-@PACKAGE_VERSION@"
 .SH NAME
 mkreiserfs \- The create tool for the Linux ReiserFS filesystem.
 .SH SYNOPSIS