profile.py: return kernel annotations for folded stacks
profile.py: return kernel annotations for folded stacks

tuxology/bcc,mcaleavya/bcc,iovisor/bcc,tuxology/bcc,tuxology/bcc,mcaleavya/bcc,brendangregg/bcc,mcaleavya/bcc,mcaleavya/bcc,brendangregg/bcc,iovisor/bcc,iovisor/bcc,iovisor/bcc,tuxology/bcc,mcaleavya/bcc,iovisor/bcc,tuxology/bcc,brendangregg/bcc,brendangregg/bcc,brendangregg/bcc