[TYPO3-core] RFC #12128: Performance improvement in t3lib_div::get_dirs()

[Dan Osipov]

This is an SVN patch request.

Type: Feature

Bugtracker references:
http://bugs.typo3.org/view.php?id=12128

Branch: Trunk

Problem:
@ symbols are used in the function. They can be removed to improve 
performance. Performance improvement with the patch is about 5%.

I also took the liberty to apply CGL to the function - but if someone 
can do a better job, feel free.
-- 
Dan Osipov
Calkins Media
http://danosipov.com/blog/
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