[security] Upgrade to 2.15-0ubuntu10.7, fixes CVE-2014-5119 and CVE-2014-0475-regression

Signed-off-by: Pasi Sjöholm <pasi.sjoholm@jollamobile.com>
Merge pull request #1 from tigeli/master

[security] Upgrade to 2.15-0ubuntu10.7, fixes CVE-2014-5119 and CVE-2014-0475-regression