Rename charterMember to membershipType to show what it actually is.

This field started out as a simple flag in the protocol to indicate a
user being a SL charter member. It has since then taken on additional
functionality that means that the name is no longer appropriate.

OpenSim/Region/CoreModules/Avatar/Profile/BasicProfileModule.cs

@@ -154,7 +154,7 @@ namespace OpenSim.Region.CoreModules.Avatar.Profile
                 name = account.FirstName + " " + account.LastName;
                 created = account.Created;
             }
-            Byte[] charterMember = Utils.StringToBytes(name);
+            Byte[] membershipType = Utils.StringToBytes(name);
 
             profileUrl = "No profile data";
             aboutText = string.Empty;
@@ -166,7 +166,7 @@ namespace OpenSim.Region.CoreModules.Avatar.Profile
             remoteClient.SendAvatarProperties(avatarID, aboutText,
                         Util.ToDateTime(created).ToString(
                                 "M/d/yyyy", CultureInfo.InvariantCulture),
-                        charterMember, firstLifeAboutText,
+                        membershipType, firstLifeAboutText,
                         (uint)(0 & 0xff),
                         firstLifeImage, image, profileUrl, partner);