added ScEnhancedProtection to ScTableProtection

Change-Id: Id6a444bd01873e30ea1522aaf3b951f4d5adc261
range list might be nil, who knows

Change-Id: Iee5554f1b51db0f6dc22ccbed743ae431bb895f6
stuff Excel enhanced protection read into ScTableProtection

Change-Id: I06db8f7466f5baddc55ea9cb117bb8a222de0c01