ReflectionType::__toString() prepending \ to class names

Hi all, I recently made some changes [1] to ReflectionType::__toString() that prepends a leading \ to class names. These changes follow from the discussion on ReflectionType improvements [2, 3] and the discussion on my PR to implement some of the RFC [4]. A \ should be prepended to class names returned from ReflectionType::__toString() so the output of this method can be used when generating code within a namespace. Currently, several libs such as Doctrine manually prepend a \ when generating code. Nullable types will complicate this, since a ? is prepended to the type name, requiring a \ to instead be inserted as the second character. The changes I made will alleviate the need for libs to manipulate the string returned from ReflectionType::__toString() when generating code. This will become more important if more complex types are introduced, such as callable prototypes. If anyone has objections to these changes, please let me know. Thanks! Aaron Piotrowski [1] http://git.php.net/?p=php-src.git;a=commitdiff;h=20fdd47921f423728b409fd0ae0106dab9c34573 [2] http://news.php.net/php.internals/94452 [3] https://wiki.php.net/rfc/reflectiontypeimprovements [4] https://github.com/php/php-src/pull/2068#issuecomment-240071841