Revert 17963, 17962 and 17955: Random number generator in JS changes

Revert 17966, 17965 also as collateral damage: Embed trigonometric lookup table.

Due to Heapcheck and valgrind failures that are not yet fixed.

TBR=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/80513004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@17981 ce2b1a6d-e550-0410-aec6-3dcde31c8c00