[2.8][Filesystem] Changed dumpFile to allow dumping to streams...#14970

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markchalloner wants to merge 1 commit intosymfony:2.8from

markchalloner:ticket_10018_2.8

Commits on Jun 13, 2015

[Filesystem] added tempnam() stream wrapper aware version of PHP's native tempnam() and fixed dumpFile to allow dumping to streams
markchalloner
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