android: Implement hostIPAddrs

...and fix a random warning

Change-Id: I6797ed448130be84c52b5aa18bdc1a23580b99bc
Reviewed-on: http://gerrit.aldebaran.lan:8080/18458
Reviewed-by: proullon <proullon@aldebaran-robotics.com>
Tested-by: proullon <proullon@aldebaran-robotics.com>
Reviewed-by: llec <llec@aldebaran-robotics.com>
Introduce qi::path::listData.

it lets you find data files (note the plural) using wildcard
expressions.

For instance: qi::path::listData("alrobotmodel", "model/*.xml")

Change-Id: Idd8ef35f61c79aff5081451f8cb8a2e532b1751d
Reviewed-on: http://gerrit.aldebaran.lan:8080/16033
Reviewed-by: sbarthelemy <sbarthelemy@aldebaran-robotics.com>
Tested-by: sbarthelemy <sbarthelemy@aldebaran-robotics.com>