* New floater positioning code. Better than what's checked in but not great.

indra/llui/llfloater.cpp

indra/llui/llfloater.h

indra/llui/llfloaterreg.cpp

indra/newview/llappviewer.cpp

indra/newview/llfloatercamera.cpp

indra/newview/llfloaterpreference.cpp

indra/newview/llfloatertoybox.cpp

indra/newview/skins/default/xui/en/floater_about.xml

indra/newview/skins/default/xui/en/floater_about_land.xml

indra/newview/skins/default/xui/en/floater_activeim.xml

indra/newview/skins/default/xui/en/floater_avatar.xml

indra/newview/skins/default/xui/en/floater_avatar_picker.xml

indra/newview/skins/default/xui/en/floater_camera.xml

indra/newview/skins/default/xui/en/floater_chat_bar.xml

indra/newview/skins/default/xui/en/floater_critical.xml

indra/newview/skins/default/xui/en/floater_destinations.xml

indra/newview/skins/default/xui/en/floater_gesture.xml

indra/newview/skins/default/xui/en/floater_help_browser.xml

indra/newview/skins/default/xui/en/floater_im_session.xml

indra/newview/skins/default/xui/en/floater_inventory.xml