Security update for atheme

This update for atheme fixes the following issues:

- CVE-2016-4478: Under certain circumstances, a remote attacker could cause denial of service due to a buffer overflow in the XMLRPC response encoding code (boo#978170)
- CVE-2014-9773: Remote attacker could change Atheme's behavior by registering/dropping certain accounts/nicks (boo#978170)

The version update to 7.2.6 also contains a number of upstream fixes.

Fixed bugs
bnc#978170
VUL-0: CVE-2016-4478, CVE-2014-9773: atheme: security fixes
Selected Binaries
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