Bug 427928 - part 1, Treat outline:auto as outline:solid.  r=roc
Bug 427928 - part 2, Add NS_THEME_FOCUS_OUTLINE to support drawing a native themed focus outline.  r=roc
Bug 427928 - part 3, Add NS_THEME_FOCUS_OUTLINE support for Cocoa widgets.  r=mstange
Bug 427928 - part 4, Add NS_THEME_FOCUS_OUTLINE support for GTK widgets.  r=roc
Bug 427928 - part 5, Add NS_THEME_FOCUS_OUTLINE support for Windows widgets.  r=roc
Bug 427928 - part 6, reftest for outline:auto.