[TYPO3-performance] Static Filecache for TYPO3 6.x

[Serjosha Brodesser]

Hi,

nc_staticfilecache uses an outdated function call in the file class.tx_ncstaticfilecache.php (line 299). 

You have to change 
t3lib_div::testInt($cacheCmd) to 
t3lib_utility_Math::canBeInterpretedAsInteger($cacheCmd)

Serjosha