Refer to “half configured” instead of “failed config”

Use it in «dpkg-query -l» header and dselect package status printing for
consistency with the rest of the ouput. This seems to have been a source
of confusion in the past, so we'll try to use this nomenclature to refer
to this package status.

debian/changelog

@@ -13,6 +13,8 @@ dpkg (1.15.6) UNRELEASED; urgency=low
   * Improve update-alternatives --display output to use two leading spaces
     for current link and slave information. Use single quotes for both “best”
     and the alternative it's pointing to. Closes: #549167
+  * Refer to “half configured” instead of “failed config” in «dpkg-query -l»
+    header and dselect package status printing for consistency.
 
   [ Updated man page translations ]
   * German (Helge Kreutzmann).

dselect/pkgdisplay.cc

@@ -51,7 +51,7 @@ const char
 			    N_("removed (configs remain)"),
 			    N_("half installed"),
 			    N_("unpacked (not set up)"),
-			    N_("failed config"),
+			    N_("half configured (config failed)"),
 			    N_("awaiting trigger processing"),
 			    N_("triggered"),
 			    N_("installed"),

src/query.c

@@ -113,7 +113,7 @@ list1package(struct pkginfo *pkg, int *head, struct pkg_array *array)
   if (!*head) {
     fputs(_("\
 Desired=Unknown/Install/Remove/Purge/Hold\n\
-| Status=Not/Inst/Cfg-files/Unpacked/Failed-cfg/Half-inst/trig-aWait/Trig-pend\n\
+| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend\n\
 |/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)\n"), stdout);
     printf(format,'|','|','/', _("Name"), _("Version"), 40, _("Description"));
     printf("+++-");					/* status */