How identify and remove leftover files on buildbots?

[Ryan Schmidt]

On Nov 2, 2014, at 4:44 PM, Marko Käning wrote:

> On 02 Nov 2014, at 23:28 , Ryan Schmidt  wrote:
>> Only if you're sure no port installs any files in that directory.
> 
> I am.

Well the R port does install files in that directory, for example.