BUG: support for GA new segment format (GH5398)
Adds support for underscores to Google's new segment format. The issue referenced is here:
closes https://github.com/pydata/pandas/issues/5398

please merge these into one commit and then I'll merge.
 Ok. All set!
 ready to merge?
 Looks good to me.
 @jtratner ?
 fine except for the two whitespace changes. I'd prefer to make it a global, but I'm okay to merge even if you don't make that change.
 I probably won't be able to make any changes through the weekend. Lemme know if any are critical. Thanks!
 Well, if you could just fix the whitespace changes, I'm okay to merge this.
 Normally I would but I'm literally on a train to the airport for a T Day extravaganza right now. 

Sent from my iPhone

> On Nov 27, 2013, at 3:26 PM, Jeff Tratner notifications@github.com wrote:
> 
> Well, if you could just fix the whitespace changes, I'm okay to merge this.
> —
> Reply to this email directly or view it on GitHub.
 @jcbozonier can you make the changes suggested by @jtratner ?
 @jcbozonier can you make those changes?
 Not currently.

On Thu, Dec 5, 2013 at 10:54 AM, jreback notifications@github.com wrote:

> @jcbozonier https://github.com/jcbozonier can you make those changes?
> 
> —
> Reply to this email directly or view it on GitHubhttps://github.com/pydata/pandas/pull/5400#issuecomment-29914999
> .
 merged via 4f9fefc2bea834690e5200978a9a32141f01bf77

thanks!

pls give master a test run to verify
