[buteo-syncfw] Adapt internal timers to keepalive api.
Merge pull request #30 from nemomobile/iphb

[buteo-syncfw] Adapt internal timers to keepalive api.
[buteo-syncfw] Add KEY_FORCE_SLOW_SYNC define
Merge pull request #31 from nemomobile/sync-target-key

[buteo-syncfw] Add defines related to slow sync and storage configuratio...
[debug] Support msyncd -d for debug logs

This replaces the no-longer-available /etc/buteo/set_sync_log_level method
[debug] Support debug messages in debug builds