Fixed test failures for LogTest class due to hardcoded decimal separator. 
Some test cases was not passing due to decimal separator was hardcoded as comma, 
instead of getting the default decimal separator configured on the system.

Solved Issue 44: UtilizationModelPlanetLabInMemory: use a global constant to define the size of the data field: a new constructor for the classes, allowing definition of data size, was added.

Solved Issue 49: Wrong calculation of debt during migrationL: all references to debt from Datacenter and its subclasses were removed.

Updated the javadocs, headers, code formatting, and Maven configuration (new versions of the dependencies)

want to disregard amount of MIPS required by VMs and allow oversubscription of hosts.

If more MIPS than available are required in VmSchedulerTimeShared, allocation failed by MIPS.
This does not happen in VmSchedulerTimeSharedOverSubscription.

Refactored power VM allocation policies, removed old policies, reimplemented the DVFS and single threshold policies

The power package and corresponding examples are being heavily updated, as well as new PlanetLab workload data are added. Currently, the package is not in the working state and will be fixed soon; however, the org.cloudbus.cloudsim.examples.power.random.NonPowerAware example is already working and can be run.

- VmSchedulerTimeShared and VmSchedulerTimeSharedOverSubscription were refactored to isolate the method
that decides MIPS shares in case of oversubscription.

- CloudSimExample1 has been reverted to its original version.

- Removed PowerPe and Power.PeList

- Removed priority field from the Vm class

- Updated javadocs (authors and some class descriptions)