Install kml/dom/xsd.h required for kml22.h.
Install kml/dom/xsd.h required for kml22.h.

Fixes #212

rashadkm/libkml,libkml/libkml,rashadkm/libkml,rashadkm/libkml,libkml/libkml,rashadkm/libkml,libkml/libkml,rashadkm/libkml,libkml/libkml,libkml/libkml