Add LordBob's Halberdier portrait, update changelogs, portrait credits.

changelog

@@ -8,6 +8,8 @@ Version 1.5.9+svn:
    * Fix flickering of units in the second part of the tutorial (bug #12923)
    * Fix high CPU usage in multiplayer lobby due to inefficient handling of
      friends and ignores lists.
+  * Graphics:
+    * New portrait for the Halberdier
 
 Version 1.5.9:
  * Campaigns:

data/core/images/portraits/ARTISTS

@@ -41,6 +41,7 @@ Human Loyalists:
     Swordsman
     Royal Guard
     Pikeman
+    Halberdier
     Sergeant
     Lieutenant
     General
@@ -73,7 +74,6 @@ Outdated versions:
 
 Jason Lutes:
 Humans:
-    Halberdier
     Javelineer
     Horseman
     Lancer

data/core/units/humans/Loyalist_Halberdier.cfg

@@ -21,6 +21,18 @@
 However, a halberd is notably more expensive to craft than a spear, and in the hands of a novice, much less effective. In the armies of Wesnoth, it is customary only to grant these weapons to veteran pikemen, who have proven that they have the skill to employ them properly on the field of war."+{SPECIAL_NOTES}+{SPECIAL_NOTES_FIRSTSTRIKE}
     die_sound={SOUND_LIST:HUMAN_DIE}
     {DEFENSE_ANIM "units/human-loyalists/halberdier-defend.png" "units/human-loyalists/halberdier.png" {SOUND_LIST:HUMAN_HIT} }
+    [portrait]
+        size=400
+        side="left"
+        mirror="false"
+        image="portraits/humans/transparent/halberdier.png"
+    [/portrait]
+    [portrait]
+        size=400
+        side="right"
+        mirror="true"
+        image="portraits/humans/transparent/halberdier.png"
+    [/portrait]
     [resistance]
         pierce=60
     [/resistance]

players_changelog

@@ -6,6 +6,8 @@ Version 1.5.9+svn:
   * Language and translations
     * new translations: Marathi
     * updated translations: British English, Dutch, German, Russian, Slovenian. 
+  * Graphics:
+    * New portrait for the Halberdier
 
 Version 1.5.9:
   * Campaigns