Define calibrated real intervals
Remove the TEMP Named methods
Further progress with calibrated intervals
Add license blurbs and author tags
Eliminate remaining TEMP interface methods
Improve CombinedCalibratedRealInterval API

Now it jsut delegates units and calibration to child axes. Its simpler than
before and has more public api.
Fix typo
Eliminate CombinedRealInterval::isDiscrete()
CalibratedRealInterval also extend CalibratedSpace
Also implement CalibratedRealInterval

CombinedCalibratedRealInterval is supposed to be a CalibratedRealInterval.
This was an oversight previously.
Add CalibratedRealInterval implementations
TypedSpace implements AxisType[] getAxes()

Ideally AnnotatedSpace would implement this method. However that would
require AxisType to get pulled into the net.imglib2 package where
AnnotatedSpace lives. We should consider doing so in the future.
Define a few more constructors
Eliminate FIXME comment
Eliminate getAxes() from TypedSpace
Add some utility classes
Rename RealIntervalUtils to IntervalUtils
Add getDims() method
Merge branch 'calibration-changes'

This merge completes the updating of the img-metadata project to include
more support for calibration calculations.