[dev] Adding -system- shares to Caldav (Horde_Dav)

[Ralf Lang]

If've been looking around for where to patch in -system- support for Dav
shares. (kronolith, nag, turban).

The Horde_Dav system expects -system- to be a user existing in
Horde_Auth and having an Identity. I'm not sure if I should provide a
static fake identity and always have a user -system- in the dav library
or if I should promote -system- to a first class special user. I'm more
leaning to the former (less invasive).

All the converting between shares owned by "" (system) and the -system-
tag seems already to be handled by kronolith/nag themselves in browse()
and friends.

-- 
Ralf Lang
Linux Consultant / Developer
Tel.: +49-170-6381563
Mail: lang at b1-systems.de
B1 Systems GmbH
Osterfeldstraße 7 / 85088 Vohburg / http://www.b1-systems.de
GF: Ralph Dehner / Unternehmenssitz: Vohburg / AG: Ingolstadt,HRB 3537

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