Revision 337

In procedure newmicro, rename dummy argument cltau to cldtau. In
procedure nuage, rename dummy argument pcltau to cldtau. In procedure
radlwsw, rename dummy argument cldtaupd to cldtau. Motivation: same
variable name across procedures.

In procedure newmicro, no need for arrays zflwp and zfiwp: scalars are
sufficient (following LMDZ).