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/llui/lliconctrl.cpp

@@ -49,7 +49,7 @@ LLIconCtrl::LLIconCtrl(const std::string& name, const LLRect &rect, const LLUUID
 :	LLUICtrl(name, 
 			 rect, 
 			 FALSE, // mouse opaque
-			 NULL, NULL, 
+			 NULL, 
 			 FOLLOWS_LEFT | FOLLOWS_TOP),
 	mColor( LLColor4::white )
 {
@@ -61,7 +61,7 @@ LLIconCtrl::LLIconCtrl(const std::string& name, const LLRect &rect, const std::s
 :	LLUICtrl(name, 
 			 rect, 
 			 FALSE, // mouse opaque
-			 NULL, NULL, 
+			 NULL,
 			 FOLLOWS_LEFT | FOLLOWS_TOP),
 	mColor( LLColor4::white ),
 	mImageName(image_name)