Add flag to print stack trace on illegal exception.

This would help a lot with native Javascript code.

R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/156373003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@19251 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Remove unused --stack-trace-on-abort flag.

R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/156783004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@19252 ce2b1a6d-e550-0410-aec6-3dcde31c8c00