dpkg-genchanges(1): Document -g and -G options

Missed in commit e161b733cf23716f35328afcd6f0ac23dc4f8e03.

Closes: #766568

debian/changelog

@@ -4,6 +4,7 @@ dpkg (1.17.21) UNRELEASED; urgency=low
   * Get consistent git-style diff support, by adding (>= 2.7) to the dpkg-dev
     patch Depends, and a Breaks patch (<< 2.7) to libdpkg-perl.
   * Error out on obsolete Build-Profiles field syntax.
+  * Document -g and -G options in dpkg-genchanges(1). Closes: #766568
 
   [ Updated programs translations ]
   * Catalan (Guillem Jover).

man/dpkg-genchanges.1

@@ -2,7 +2,7 @@
 .\"
 .\" Copyright © 1995-1996 Ian Jackson <ian@chiark.chu.cam.ac.uk>
 .\" Copyright © 2000 Wichert Akkerman <wakkerma@debian.org>
-.\" Copyright © 2006-2012 Guillem Jover <guillem@debian.org>
+.\" Copyright © 2006-2014 Guillem Jover <guillem@debian.org>
 .\" Copyright © 2008-2010 Raphaël Hertzog <hertzog@debian.org>
 .\"
 .\" This is free software; you can redistribute it and/or modify
@@ -18,7 +18,7 @@
 .\" You should have received a copy of the GNU General Public License
 .\" along with this program.  If not, see <https://www.gnu.org/licenses/>.
 .
-.TH dpkg\-genchanges 1 "2012-05-04" "Debian Project" "dpkg utilities"
+.TH dpkg\-genchanges 1 "2014-09-24" "Debian Project" "dpkg utilities"
 .SH NAME
 dpkg\-genchanges \- generate Debian .changes files
 .
@@ -36,6 +36,14 @@ file
 .
 .SH OPTIONS
 .TP
+.B \-g
+Specifies that only source and architecture independent packages should
+be uploaded (no architecture specific packages will be included).
+.TP
+.B \-G
+Specifies that only source and architecture specific packages should
+be uploaded (no architecture independent packages will be included).
+.TP
 .BR \-b ", " \-B ", " \-A
 Specifies that a binary-only build is taking place (no source files are
 to be included). There's no distinction between \fB\-b\fP, \fB\-B\fP and