[TYPO3-core] RFC #11827: Update wizard adds the string '_CACHEFILE' to extList

[Rupert Germann]

Hi,

this is a SVN patch request.

Type: Bugfix

Bugtracker references:
http://bugs.typo3.org/view.php?id=11827

Branches: Trunk

Problem:
When using the 'install system extensions' function of the update wizard 
in install tool the resulting extlist in localconf.php will look like 
this: '...,llxmltranslate,_CACHEFILE,simulatestatic';

this is caused by function addExtToList() in class 
tx_coreupdates_installsysexts where all entries in 
$GLOBALS['TYPO3_LOADED_EXT'] are used as extension keys.

Solution:
remove the _CACHEFILE entry from $GLOBALS['TYPO3_LOADED_EXT'] before 
merging it with the list of new extensions.

greets
rupert