Correct case on DISABLED_UPDATE cmake variable.
Correct case on DISABLED_UPDATE cmake variable.

Necessary to work offline.

jcollfont/SCIRun,jcollfont/SCIRun,ajanson/SCIRun,collint8/SCIRun,jessdtate/SCIRun,jessdtate/SCIRun,moritzdannhauer/SCIRunGUIPrototype,ajanson/SCIRun,ajanson/SCIRun,jcollfont/SCIRun,jessdtate/SCIRun,jessdtate/SCIRun,moritzdannhauer/SCIRunGUIPrototype,collint8/SCIRun,collint8/SCIRun,jessdtate/SCIRun,moritzdannhauer/SCIRunGUIPrototype,collint8/SCIRun,ajanson/SCIRun,collint8/SCIRun,jessdtate/SCIRun,jcollfont/SCIRun,jcollfont/SCIRun,collint8/SCIRun,moritzdannhauer/SCIRunGUIPrototype,moritzdannhauer/SCIRunGUIPrototype,collint8/SCIRun,jcollfont/SCIRun,ajanson/SCIRun,jessdtate/SCIRun,jcollfont/SCIRun,ajanson/SCIRun,collint8/SCIRun,moritzdannhauer/SCIRunGUIPrototype,moritzdannhauer/SCIRunGUIPrototype,ajanson/SCIRun,jessdtate/SCIRun