re-add tabcontrol styles

xpfe/global/resources/skin/global.css

@@ -20,6 +20,7 @@
 @import url(chrome://global/skin/menu.css);
 @import url(chrome://global/skin/formatting.css);
 @import url(chrome://global/skin/textfield.css);
+@import url(chrome://global/skin/tabcontrol.css);
 
 @namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"); 
 @namespace html url("http://www.w3.org/TR/REC-html40"); 

xpfe/global/resources/skin/makefile.win

@@ -35,6 +35,7 @@ install::
 	$(MAKE_INSTALL) global.css $(DISTBROWSER)
 	$(MAKE_INSTALL) splitter.css $(DISTBROWSER)
 	$(MAKE_INSTALL) button.css $(DISTBROWSER)
+	$(MAKE_INSTALL) tabcontrol.css $(DISTBROWSER)
 	$(MAKE_INSTALL) textfield.css $(DISTBROWSER)
 	$(MAKE_INSTALL) formatting.css $(DISTBROWSER)
 	$(MAKE_INSTALL) box.css $(DISTBROWSER)