LimeSurvey/LimeSurvey — pull request #192 by KRav007 (2014-04-22 10:32:00+00:00)
Title: The define of TCPDF constants was causing an error 

The define of TCPDF constants was causing an error (Constant PDF_PAGE_FORMAT etc. already defined), if you use TCPDF within own plugins and use the print PDF feature of LS.

The new if-statements avoid the error, if the constant is tried to define again.