Fix python2.7 support for dirtop tool
Fix python2.7 support for dirtop tool

* Catch TypeError raised by Python3 glob and fall back to Python2 interface

brendangregg/bcc,brendangregg/bcc,iovisor/bcc,brendangregg/bcc,brendangregg/bcc,iovisor/bcc,iovisor/bcc,iovisor/bcc,iovisor/bcc,brendangregg/bcc