Feature Request: Allow use of a separate color for linked usernames.

The setting is HTMLAgentColor, I will not add this to preferences for now.

Note that usernames before the colon in the chat are cached,
set before login to change it for everyone or relog.
Also hook up getStyle() for the registered urls,
cleans up some code in lltexteditor.

indra/llui/llurlmatch.h

@@ -70,7 +70,7 @@ public:
 	std::string getIcon() const { return mIcon; }
 
 	/// Return the color to render the displayed text
-	//LLStyle::Params getStyle() const { return mStyle; }
+	LLStyleSP getStyle() const { return mStyle; }
 
 	/// Return the name of a XUI file containing the context menu items
 	std::string getMenuName() const { return mMenuName; }
@@ -87,7 +87,7 @@ public:
 	/// Change the contents of this match object (used by LLUrlRegistry)
 	void setValues(U32 start, U32 end, const std::string &url, const std::string &label,
 	               const std::string& query, const std::string &tooltip, const std::string &icon,
-				   /*const LLStyle::Params& style,*/ const std::string &menu, 
+				   const LLStyleSP& style, const std::string &menu, 
 				   const std::string &location, const LLUUID& id,
 				   bool underline_on_hover_only = false, bool trusted = false);
 
@@ -103,7 +103,7 @@ private:
 	std::string mMenuName;
 	std::string mLocation;
 	LLUUID		mID;
-	//LLStyle::Params mStyle;
+	LLStyleSP mStyle;
 	bool		mUnderlineOnHoverOnly;
 	bool		mTrusted;
 };