UI cleanup.

-Added ui-local transformation matrix.
-Gutted legacy commitcallbacks throughout ui widget ctors.
-Created filter_editor ui widget which issues commit on keypress
   -search_editor commits on focus loss/enter press
   -search_editor and filter_editor now have a built in 'x' button to clear text.
-LLComboBox::setPrearrangeCallback now uses boost::function
-LLComboBox::setTextEntryCallback now uses boost::function
-LLLineEditor::setKeystrokeCallback now uses boost::function
-LLLineEditor::setPrevalidate now uses boost::function
-LLPanel::childSetKeystrokeCallback removed
-LLPanel::childSetPrevalidate removed
-LLPanel::childSetActionTextbox now uses boost::function
-LLTextBox::setClickedCallback now uses boost::function
-LLTextEditor::setKeystrokeCallback added.
-Cleaned up JCFloaterAreaSearch

indra/newview/llviewermenu.cpp

@@ -3859,7 +3859,7 @@ void handle_close_all_notifications(void*)
 
 void handle_area_search(void*)
 {
-	JCFloaterAreaSearch::toggle();
+	JCFloaterAreaSearch::toggleInstance();
 }
 
 void handle_fake_away_status(void*)
@@ -6755,7 +6755,7 @@ class LLShowFloater : public view_listener_t
 		}
 		else if (floater_name == "areasearch")
 		{
-			JCFloaterAreaSearch::toggle();
+			JCFloaterAreaSearch::toggleInstance();
 		}
 		else if (floater_name == "grid options")
 		{