add yosemite to macOSXSeries
Move backupsMetaC into backups.go.
Move state/backups.go to state/backups/storage.go.
Use the common implementation for getting a new State.
Add a note about dropping the corresponding function in state.
Use *state.State rather than the temp surrogate interfaces.
Fix a couple storage names.
Add yosemite
Fix a missed change.
Merge pull request #1182 from ericsnowcurrently/backups-storage-go

Move state/backups.go to the state/backups/storage.go.

This eliminates the state/backups dependency in state.  See https://bugs.launchpad.net/juju-core/+bug/1392520.

(Review request: http://reviews.vapour.ws/r/493/)
Merge pull request #966 from jrwren/master

add yosemite to macOSXSeries
state: env UUID migration for meterStatus collection

This is required for multi-environment support.
Merge pull request #1189 from mjs/meterstatus-env-uuid

state: env UUID migration for meterStatus collection

This is required for multi-environment support.

(Review request: http://reviews.vapour.ws/r/499/)