libxc 2.2.0

Closes #29746.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
neo4j 2.1.1

Closes #29747.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
gpsbabel 1.5.1

Closes #29748.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
harfbuzz: update 0.9.28 bottle.