Mark test-debug/RecursiveBreakpointsGlobal as flaky.

TBR=machenbach@chromium.org
BUG=v8:3525
LOG=N

Review URL: https://codereview.chromium.org/494303003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@23290 ce2b1a6d-e550-0410-aec6-3dcde31c8c00