Changeset 620 for XIOS/trunk/src/filter/axis_inverse.cpp

Implementing generic transformation algorithm (local commit)

+) Implement 3 important classes:

-gridTransformation to read transformation info from grid and interface with the rest of XIOS
-transformationMapping to be in charge of sending/receiving transformation info among clients
-transformationAlgorithm to represent various algorithms

+) Make some change on field to use the new classes

Test
+) Only test_new_features with inversed axis