[gfortran,patch] Get rid of some convert calls in favor of build_int_cst

[François-Xavier Coudert]

>> 2006-06-19  Francois-Xavier Coudert  <coudert@clipper.ens.fr>
>>
>>       * trans-expr.c (gfc_conv_missing_dummy, gfc_conv_unary_op,
>>       gfc_conv_cst_int_power, gfc_conv_string_tmp,
>>       gfc_conv_function_call): Replace calls to convert on constant
>>       integer nodes by build_int_cst.
>>       * trans-stmt.c (gfc_trans_do): Likewise.
>>       * trans-io.c (set_internal_unit, transfer_namelist_element):
>>       Likewise.
>>       * trans-decl.c (build_entry_thunks): Likewise.
>
> This looks to be a straight forward mechanic change.
> It is OK for trunk.

Thanks.

> Please, let it sit in trunk for
> at least a week before considering the patching of 4.1.
> I'll note that I'm leary of non-bug changes going into
> 4.1.

I understand, but it really is a pain to have to rewrite bug-fixing
patches just because of mechanic changes between branches.

> Also, does this change allow the remove of any of the
> integer_zero_node, etc. nodes?

Hum, they're common to all front-ends (not gfc_ prefix), and widely
used outside the fortran directory also. So, I don't think we should
remove them right now, at least give other people a prior notice! :)

FX