added textarea with -moz-fixed so it has the proper default font in quirks mode

b=44656 r=kmcclusk

layout/html/document/src/quirk.css

@@ -80,3 +80,8 @@ input[type="text"] {
   padding-left:   0px;
   padding-right:  0px;
 } 
+
+/* text input */
+textarea {
+  font-family:-moz-fixed;
+}

layout/style/quirk.css

@@ -80,3 +80,8 @@ input[type="text"] {
   padding-left:   0px;
   padding-right:  0px;
 } 
+
+/* text input */
+textarea {
+  font-family:-moz-fixed;
+}