changed the mute hotkey from ctrl-m to ctrl-alt-m

update the hotkeys section in the manual

changelog

@@ -8,6 +8,8 @@ Version 1.3.9+svn:
  * multiplayer:
    * revised maps: Silverhead Crossing, Weldyn Channel, Blue Water Province
    * the server sends a periodical 'ping' to all players to detect ghosts
+ * user interface:
+   * changed the mute hotkey from ctrl-m to ctrl-alt-m
  * WML engine:
    * new key "contains=" in [variable] conditions to check the presence of a 
      substring in a variable value

data/core/hotkeys.cfg

@@ -110,6 +110,7 @@
     command=mute
     key=m
     cmd=yes
+    alt=yes
 [/hotkey]
 [hotkey]
     command=objectives
@@ -336,6 +337,7 @@
     command=mute
     key=m
     ctrl=yes
+    alt=yes
 [/hotkey]
 [hotkey]
     command=objectives

doc/manual/manual.txt

@@ -380,12 +380,12 @@ Right click    Main menu, cancel action
 Middle click   Center on pointer location
 Escape         Exit game, exit menu, cancel message
 Ctrl-r         Recruit unit
-Ctrl-Shift-r   Repeat last recruit
+Ctrl-alt-r     Repeat last recruit
 Alt-r          Recall unit
 u              Undo last move (only deterministic moves can be undone)
 r              Redo move
 m              Message another player (in multiplayer)
-M              Message your allies (in multiplayer)
+ctrl-m         Message your allies (in multiplayer)
 Alt-m          Message everyone in the game (in multiplayer)
 Alt-c          View chat log
 n              Cycle through units that have movement left
@@ -426,8 +426,8 @@ Alt-s          Show status table
 s              Show statistics
 Alt-u          Show unit list
 Ctrl-t         Show terrain table
-Ctrl-m         Toggle muting of game sounds
-:              Command mode
+Ctrl-alt-m     Toggle muting of game sounds
+:              http://www.wesnoth.org/wiki/CommandMode[Command mode]
 ------------------------------------------------------------------------------
 
 Gold

players_changelog

@@ -14,6 +14,8 @@ Version 1.3.9+svn:
   * Multiplayer
     * Revised maps: Silverhead Crossing, Weldyn Channel, Blue Water Province.
 
+  * User interface
+    * Changed the mute hotkey from ctrl-m to ctrl-alt-m.
 
 Version 1.3.9:
   * Campaigns