Zend_Pdf: added ':' pagesize format support (in addition to '::'). ZF-5156.
Zend_Pdf: added ':' pagesize format support (in addition to '::'). ZF-5156.

git-svn-id: abaeb2b3ba5a94ed391a9405ad7d63d0414021c9@19749 44c647ce-9c0f-0410-b52a-842ac1e357ba

zendframework/ZendPdf,heiglandreas/ZendPdf,indeed-id/ZendPdf