dpkg(1): Clarify that DPKG_MAINTSCRIPT_PACKAGE is not arch-qualified

The architecture information is provided in the DPKG_MAINTSCRIPT_ARCH
environment variable.

debian/changelog

@@ -28,6 +28,7 @@ dpkg (1.17.0) UNRELEASED; urgency=low
     - Move dpkg-buildflags(1) HARDENING into a new FEATURE AREAS subsection.
     - Improve dpkg-buildflags(1) usage documentation.
       Thanks to Matthijs Kooijman <matthijs@stdin.nl>. Closes: #657627
+    - Clarify that DPKG_MAINTSCRIPT_PACKAGE is not arch-qualified.
   * Use colon instead of dot for user:group in dpkg debug output.
   * Remove support for obsolete DM-Upload-Allowed from Dpkg::Vendor::Debian.
   * Fix update-alternatives to use the current alternative link as the first

man/dpkg.1

@@ -6,7 +6,7 @@
 .\" Copyright © 2000-2003 Adam Heath <doogie@debian.org>
 .\" Copyright © 2002 Josip Rodin
 .\" Copyright © 2004-2005 Scott James Remnant <keybuk@debian.org>
-.\" Copyright © 2006-2012 Guillem Jover <guillem@debian.org>
+.\" Copyright © 2006-2013 Guillem Jover <guillem@debian.org>
 .\" Copyright © 2007-2008 Ian Jackson <ian@davenant.greenend.org.uk>
 .\" Copyright © 2008-2011 Raphaël Hertzog <hertzog@debian.org>
 .\"
@@ -23,7 +23,7 @@
 .\" You should have received a copy of the GNU General Public License
 .\" along with this program.  If not, see <http://www.gnu.org/licenses/>.
 .
-.TH dpkg 1 "2012-06-05" "Debian Project" "dpkg suite"
+.TH dpkg 1 "2013-04-05" "Debian Project" "dpkg suite"
 .SH NAME
 dpkg \- package manager for Debian
 .
@@ -704,7 +704,7 @@ version of the currently running \fBdpkg\fP instance.
 .TP
 .B DPKG_MAINTSCRIPT_PACKAGE
 Defined by \fBdpkg\fP on the maintainer script environment to the
-package name being handled.
+(non-arch-qualified) package name being handled.
 .TP
 .B DPKG_MAINTSCRIPT_ARCH
 Defined by \fBdpkg\fP on the maintainer script environment to the