Fixed getInteractionNeighbors to work with new separation criteria; Propagated separation criterion into Uniform kernel and m2lhandler (for precomputation); Provided test with one over r2 with corewidth (pb with derivative).

See PerfTest.hpp documentation for more information.

FCostCell: Added a trait class that allows finding out whether a class has FCostCell in its inheritance structure.

BalancePerfTest: Added FFmmAlgorithmThread choice between static and dynamic OpenMP chunk sizes, added FFmmAlgorithmTask

FFmmAlgorithmTask: Added inheritance from FAlgorithmTimers.

add a way to swtich between static schedule (almost) or with a chunk size divide by nb threads square

testFmmAlgorithmBalanced : test file, checks that each FMM operator is called the right number of times.