add limitation on velocity in frequency and direction according Dietrich 2012

NEWS.txt

examples/tomawac/whirl_current/fom_whirl_limit.slf

examples/tomawac/whirl_current/tom_whirl_limit.cas

examples/tomawac/whirl_current/vnv_whirl_current.py

sources/api/api.cmdf

sources/telemac2d/telemac2d.cmdf

sources/telemac3d/telemac3d.cmdf

sources/tomawac/conw4d.f

sources/tomawac/conwac.f

sources/tomawac/declarations_tomawac.f

sources/tomawac/interface_tomawac.f

sources/tomawac/lecdon_tomawac.f

sources/tomawac/limit_celerity.f

sources/tomawac/predif.f

sources/tomawac/tomawac.cmdf

sources/tomawac/tomawac.dico

sources/tomawac/tomawac.dico.orig