Fixed the escaping of back slashes and << in console output#23730

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javiereguiluz wants to merge 3 commits intosymfony:2.7from

javiereguiluz:fix_18481

Commits on Jul 31, 2017

Fixed the escaping of back slashes and << in console output
javiereguiluz
committed

Commits on Aug 28, 2017

Fixed a silly error to really use the null character
javiereguiluz
committed

Commits on Aug 29, 2017

Remove NULL chars from text before using the NULL char for our own purposes
javiereguiluz
committed