Add new demographics

Demographics added for,
 b = include Built Units
 k = include Killed Units
 l = include Lost Units

server/report.c

@@ -147,6 +147,9 @@ static int get_cities(const struct player *pplayer);
 static int get_improvements(const struct player *pplayer);
 static int get_all_wonders(const struct player *pplayer);
 static int get_mil_units(const struct player *pplayer);
+static int get_units_built(const struct player *pplayer);
+static int get_units_killed(const struct player *pplayer);
+static int get_units_lost(const struct player *pplayer);
 
 
 static const char *area_to_text(int value);
@@ -194,6 +197,9 @@ static struct dem_row {
   {'R', N_("Research Speed"),   get_research,    science_to_text,     TRUE },
   {'M', N_("Military Service"), get_mil_service, mil_service_to_text, FALSE },
   {'m', N_("Military Units"),   get_mil_units,   mil_units_to_text,   TRUE },
+  {'b', N_("Built Units"),      get_units_built,   mil_units_to_text,   TRUE },
+  {'k', N_("Killed Units"),     get_units_killed,   mil_units_to_text,   TRUE },
+  {'l', N_("Lost Units"),       get_units_lost,   mil_units_to_text,   TRUE },
   {'O', N_("Pollution"),        get_pollution,   pollution_to_text,   FALSE },
   {'C', N_("Culture"),          get_culture,     culture_to_text,     TRUE }
 };

server/settings.c

@@ -2880,6 +2880,9 @@ static struct setting settings[] = {
                 "    R = include Research Speed\n"
                 "    M = include Military Service\n"
                 "    m = include Military Units\n"
+                "    b = include Built Units\n"
+                "    k = include Killed Units\n"
+                "    l = include Lost Units\n"
                 "    O = include Pollution\n"
                 "    C = include Culture\n"
                 "Additionally, the following characters control whether "