Re: [libvirt] [PATCH] Changes to clock timer XML to match final design.

The clock timer XML is being updated in the following ways (based on further off-list discussion that was missed during the initial implementation): 1) 'wallclock' is changed to 'track', and the possible values are 'boot' (corresponds to old 'host'), 'guest', and 'wall'. 2) 'mode' has an additional value 'smpsafe' 3) when tickpolicy='catchup', there can be an optional sub-element of timer called 'catchup': <catchup threshold=123 slew=120 limit=10000/> Those three values are all longs, always optional, and if they are present, they are positive. Internally, 0 indicates "unspecified". * docs/schemas/domain.rng: updated RNG definition to account for changes * src/conf/domain_conf.h: change the C struct and enums to match changes. * src/conf/domain_conf.c: timer parse and format functions changed to handle the new selections and new element. * src/libvirt_private.syms: *TimerWallclock* changes to *TimerTrack* * src/qemu/qemu_conf.c: again, account for Wallclock --> Track change.