Changeset 2635 for LMDZ5/trunk/libf/phylmd/add_wake_tend.F90

Some cleaning in the wake routines: (i) the wake
number per unit area (wdens) is now a state
variable (held constant for the time being);
(ii) wake state variable changes are computed in
subroutine 'physiq' if iflag_wake_tend=1 (it is
computed within wake routines if
iflag_wake_tend=0, consistent with earlier
versions); (iii) the new routine 'add_wake_tend'
adds tendencies to wake state variables; (iv)
tendencies due to various processes (pbl, wakes,
thermals) are named and added separately.