[Containers] add @array.rotate, define push and unshift to return array
[Containers] add @array.rotate, define push and unshift to return array


git-svn-id: 53605643c415f7495558be95614cf14171f1db78@27062 c213334d-75ef-0310-aa23-eaa082d1ae64

perl6/specs,prammer/specs,perl6/specs,prammer/specs,tokuhirom/specs,prammer/specs,tokuhirom/specs,tokuhirom/specs