Extend the D8 break command to handle script names with :line[:column] position specification and handles using #<id>#.
Review URL: http://codereview.chromium.org/92011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1770 ce2b1a6d-e550-0410-aec6-3dcde31c8c00