Merge branch 'add-albers-equal-area-projection' of github.com:cvelasc…

…of/iris into add-albers-equal-area-projection

* 'add-albers-equal-area-projection' of github.com:cvelascof/iris:
  Added longitude_of_prime_meridian in test_Saver - test_aea_cs. Changes dates in copyright of regrid and test_regrid to pass tests
  Fix error in AlbersEqualArea repr definition
  Fixed errors in AlbersEqualArea test scripts.
  Add Albers Equal Area Projection and some test as per SciTools#2496
  Rebased to upstream