Add xe.0.6.3

Signed-off-by: David Scott <dave.scott@eu.citrix.com>
xe.0.6.3 depends on oasis (in the Makefile)

Signed-off-by: David Scott <dave.scott@citrix.com>
Merge pull request #3270 from djs55/xe.0.6.3

Add xe.0.6.3