[TYPO3-core] RFC: #13611: Replace calls to t3lib_div:: within t3lib_div to self:: du to performance reasons

[Georg Ringer]

Hey team,

this is a SVN patch request.

Type: bugfix

Branch: trunk, 4.3

BT reference: http://bugs.typo3.org/view.php?id=13611

Problem:
Currently t3lib_div uses t3lib_div:: to refere to itself statically.

Self:: is 8% to 10% faster than using classname:: due to the fact that
no scope resolution has to be performed.

See:
http://svn.php.net/viewvc/php/php-src/branches/PHP_5_2/Zend/zend_API.c?view=markup
[^]

Line(2154 to 2164).

Solution:
Change all t3lib_div:: calls inside the t3lib_div:: to self::

Additional information:
- Thanks to Nikolas Hagelstein, how did the performance test which can
be found inside the bugtracker entry and who created the entry. Patch is
by myself

- I know that this patch doesn't upply CGL because it makes it easier to
review it and the whole file is a mess ;)

Georg
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