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/llurlregistry.cpp

@@ -265,7 +265,7 @@ bool LLUrlRegistry::findUrl(const std::string &text, LLUrlMatch &match, const LL
 						match_entry->getQuery(url),
 						match_entry->getTooltip(url),
 						match_entry->getIcon(url),
-						//match_entry->getStyle(),
+						match_entry->getStyle(),
 						match_entry->getMenuName(),
 						match_entry->getLocation(url),
 						match_entry->getID(url),
@@ -302,7 +302,7 @@ bool LLUrlRegistry::findUrl(const LLWString &text, LLUrlMatch &match, const LLUr
 						match.getQuery(),
 						match.getTooltip(),
 						match.getIcon(),
-						//match.getStyle(),
+						match.getStyle(),
 						match.getMenuName(),
 						match.getLocation(),
 						match.getID(),