Crash with multiple trips

Refer to issue #11 at https://github.com/01org/thermal_daemon/issues.
Removed dynamic allocation when it is not needed. Also don't replace
the existig trips for loading of trips for new thermal zone.
Merge pull request #31 from 01org/development_0

Crash with multiple trips
Merge pull request #32 from 01org/thermal_daemon_next

Thermal daemon next