Update Spanish translation of manual pages

Update to 1910t.

debian/changelog

@@ -43,6 +43,7 @@ dpkg (1.15.8) UNRELEASED; urgency=low
   [ Updated man page translations ]
   * German (Helge Kreutzmann).
   * Russian (Yuri Kozlov). Closes: #579149
+  * Spanish (Omar Campagne).
   * Swedish (Peter Krefting).
 
   [ Updated scripts translations ]

man/po/es.add

@@ -9,5 +9,5 @@ NOK.
 Debian L10n Spanish <debian\-l10n\-spanish@lists.debian.org>.
 .br
 Revisiones por Santiago Vila <sanvila@unex.es>,
-Javier Fernández\-Sanguino y
-Rubén Porras.
+Javier Fernández\-Sanguino, Rubén Porras,
+Luis Uribe y Omar Campagne.

man/po/po4a.cfg

@@ -4,7 +4,7 @@
 # Make sure the man pages are generated with the right encoding.
 [po4a_alias:man] man                                      \
                  opt_de:"-L ISO-8859-1"                   \
-                 opt_es:"-L ISO-8859-1"                   \
+                 opt_es:"-L UTF-8"                        \
                  opt_fr:"-L ISO-8859-1"                   \
                  opt_hu:"-L ISO-8859-2     -A ISO-8859-2" \
                  opt_ja:"-L euc-jp         -A utf-8"      \