Revision 78

Moved procedure inigeom into module comgeom.

In disvert, renamed s_sampling to vert_sampling, following
LMDZ. Removed choice strato1. In case read, read ap and bp instead of
s (following LMDZ).

Added argument phis to start_init_orog and start_init_dyn, and removed
variable phis of module start_init_orog_m. In etat0 and
start_init_orog, renamed relief to zmea_2d. In start_init_dyn, renamed
psol to ps.

In start_init_orog, renamed relief_hi to relief. No need to set
phis(iim + 1, :) = phis(1, :), already done in grid_noro.

Documentation for massbar out of SVN, in massbar.txt. Documentation
was duplicated in massdair, but not relevant in massdair.

In conflx, no need to initialize pen_[ud] and pde_[ud]. In flxasc,
used intermediary variable fact (following LMDZ).

In grid_noro, added local variable zmea0 for zmea not smoothed and
computed zphi from zmea instead of zmea0 (following LMDZ). This
changes the results of ce0l.

Removed arguments pen_u and pde_d of phytrac and nflxtr, which were
not used.