Update (lib)expat to 2.2.2
Fixes following CVEs: CVE-2017-9233 and CVE-2016-9063 (2.2.2)
Update homepage URL
Signed-off-by: Daniel Engberg <daniel.engberg.lists@pyret.net>
- fix licensing file list
- install pkgconfig file
- drop explicite call to Build/Compile
- use PKG_INSTALL
Signed-off-by: Michael Heimpold <mhei@heimpold.de>