fix for #119331. prefer html problems with LDAP servers.

r=dmose, sr=sspitzer.  thanks for john.marmion@ireland.sun.com for the patch
and to Roland Felnhofer for the feedback in the bug.

mailnews/addrbook/src/nsAbCardProperty.cpp

@@ -530,12 +530,12 @@ NS_IMETHODIMP nsAbCardProperty::SetCardValue(const char *attrname, const PRUnich
       switch (attrname[2]) { 
         case 'e':
           switch (value[0]) {
-            case 'h':
-            case 'H':
+            case 't':    // "true"
+            case 'T':
               rv = SetPreferMailFormat(nsIAbPreferMailFormat::html);
               break;
-            case 'p':
-            case 'P':
+            case 'f':    // "false"
+            case 'F':
               rv = SetPreferMailFormat(nsIAbPreferMailFormat::plaintext);
               break;
             default:

mailnews/addrbook/src/nsAbLDAPProperties.cpp

@@ -172,10 +172,6 @@ static MozillaLdapPropertyRelation mozillaLdapPropertyTable[] =
     {MozillaProperty_String, "Notes",        "description"},
 
     // mozilla specfic
-    // use the more self-explanatory named attribute 'xmozillapreferredmailformat' to
-    // the now deprecated 'xmozillausehtmlmail' which sounds like it is a boolean value.
-    // We need to continue to include the 'xmozillausehtmlmail' for existing systems. 
-    {MozillaProperty_Int, "PreferMailFormat",    "xmozillapreferredmailformat"},
     {MozillaProperty_Int, "PreferMailFormat",    "xmozillausehtmlmail"},
     // ?
     {MozillaProperty_Int, "LastModifiedDate",    "modifytimestamp"}