Treat VDI.epoch_{begin,end} as no-ops

This fixes #7

Signed-off-by: David Scott <dave.scott@eu.citrix.com>
Bump trunk version to 0.1.2

Signed-off-by: David Scott <dave.scott@eu.citrix.com>
When daemonizing, write the pidfile

This is an internal detail of the Xcp_service implementation, so
use that rather than Core's daemonize for now.

Fixes #8

Signed-off-by: David Scott <dave.scott@eu.citrix.com>
Update CHANGES

Signed-off-by: David Scott <dave.scott@eu.citrix.com>