facebook/hhvm — pull request #3788 by SiebelsTim (2014-09-19 09:25:00+00:00)
Title: Fix reference and empty arguments in ReflectionFunction::__toString

When a function has no arguments, ReflectionFunction::__toString is supposed to omit the parameters section
ReflectionParameter::__toString is supposed to add the ampersand if a parameter is passed by reference

Part of #3787

Also move slow/ext_reflection/* to slow/reflection_classes