Make sure we lowercase types/extensions before putting them in the

datasource and that we lowercase types/extensions before comparing to
the datasource.  Bug 114462, r=law, sr=mscott.

suite/common/pref/overrideHandler.js

@@ -25,9 +25,9 @@ HandlerOverride.prototype = {
   set mimeType(aMIMETypeString)
   {
     if (!this.mUpdateMode)
-      assertMIMEStuff(MIME_URI(aMIMETypeString), "value", aMIMETypeString);
+      assertMIMEStuff(MIME_URI(aMIMETypeString), "value", aMIMETypeString.toLowerCase());
     else
-      changeMIMEStuff(MIME_URI(aMIMETypeString), "value", aMIMETypeString);
+      changeMIMEStuff(MIME_URI(aMIMETypeString), "value", aMIMETypeString.toLowerCase());
   },
   
   get description()
@@ -100,7 +100,7 @@ HandlerOverride.prototype = {
         var currentExtension = extensionTargets.getNext();
         if (currentExtension) {
           currentExtension = currentExtension.QueryInterface(Components.interfaces.nsIRDFLiteral);
-          extString += currentExtension.Value.toUpperCase() + " ";
+          extString += currentExtension.Value.toLowerCase() + " ";
         }
       }
     }
@@ -109,12 +109,12 @@ HandlerOverride.prototype = {
   
   addExtension: function (aExtensionString)
   {
-    assertMIMEStuff(MIME_URI(this.mimeType), "fileExtensions", aExtensionString);
+    assertMIMEStuff(MIME_URI(this.mimeType), "fileExtensions", aExtensionString.toLowerCase());
   },
   
   removeExtension: function (aExtensionString)
   {
-    unassertMIMEStuff(MIME_URI(this.mimeType), "fileExtensions", aExtensionString);
+    unassertMIMEStuff(MIME_URI(this.mimeType), "fileExtensions", aExtensionString.toLowerCase());
   },
   
   // content handling

suite/common/pref/pref-applications-edit.xul

@@ -73,7 +73,7 @@
         var info = window.arguments[0].mLauncher.MIMEInfo;
 
         // Get mime type from which we can construct a HandlerInfo...
-        var mimeType = info.MIMEType;
+        var mimeType = info.MIMEType.toLowerCase();
 
         // Construct what we need from mime type URI.
         getDS();
@@ -193,6 +193,7 @@
         return false;
       }
       getDS();
+      gMIMEField.value = gMIMEField.value.toLowerCase();
       // figure out if this mime type already exists. 
       if (gMIMEField.value != gOldMIME) {
         var exists = mimeHandlerExists(gMIMEField.value);
@@ -222,7 +223,7 @@
       // set description, editable, and extensions
       handlerInfo.description = gOldDesc
       handlerInfo.isEditable = true;
-      var extensions = gOldExtensions.split(" ");
+      var extensions = gOldExtensions.toLowerCase().split(" ");
       for (var i = 0; i < extensions.length; i++) {
         var currExtension = extensions[i];
         handlerInfo.addExtension(currExtension);