Parse docblock indented with tabs
Parse docblock indented with tabs

This fixes the regular expression used to clean-up the docComments.
The tab escape (\t) was not parsed correctly because it was specified
inside a single quoted string.

Additionally the cleaned-up doc comment ($this->cleanDocComment) was
used by the DocBlockScanner.

This fixes zendframework/zf2#2445
basz/zend-code,remicollet/zend-code,Ocramius/zend-code,MadCat34/zend-code,zendframework/zend-code,DaanBiesterbos/zend-code