libxml2: import from packages

Signed-off-by: Michael Heimpold <mhei@heimpold.de>
sslh: fix build by correcting version and refreshing makefile patch

Signed-off-by: Russell Senior <russell@personaltelco.net>
Merge pull request #37 from RussellSenior/fix-sslh2

sslh: fix build by correcting version and refreshing makefile patch