[TYPO3-core] RFC #11722: speed up function t3lib_BEfunc::selectVersionsOfRecord

[Rupert Germann]

Hi,

after my last patch was accepted in less than an hour, let's see if this 
works a second time.
;-)

this is a SVN patch request.

Type: Bugfix, BE performance improvement

Bugtracker references:
http://bugs.typo3.org/view.php?id=11722

Branches: Trunk

problem:
when rendering the extended listview in the Backend, TYPO3 does 2 
queries for each record to find out if it has versions. The first query 
fetches the currently displayed record again which is already present in 
the calling function.

solution:
traverse the current $row to function 
t3lib_BEfunc::selectVersionsOfRecord() and re-use it instead of fetching 
it from the DB

greets
rupert

"There shall be no new TYPO3 version delivering content slower than its 
predecessor!"