text: Add "none" preedit-style

Use "default" preedit style as default. "None" is used when the
composing text should look like non-composing text.

Signed-off-by: Jan Arne Petersen <jpetersen@openismus.com>

clients/keyboard.c

@@ -233,8 +233,8 @@ static const struct layout arabic_layout = {
 };
 
 static const char *style_labels[] = {
-	"none",
 	"default",
+	"none",
 	"active",
 	"inactive",
 	"highlight",

protocol/text.xml

@@ -209,7 +209,8 @@
       <arg name="commit" type="string"/>
     </event>
     <enum name="preedit_style">
-      <entry name="default" value="1"/>
+      <entry name="default" value="0" summary="default style for composing text"/>
+      <entry name="none" value="1" summary="style should be the same as in non-composing text"/>
       <entry name="active" value="2"/>
       <entry name="inactive" value="3"/>
       <entry name="highlight" value="4"/>