[patch, fortran] Reduce memory usage for intrinsic masks

[François-Xavier Coudert]

:REVIEWMAIL:

>> 2007-09-07  Thomas Koenig  <tkoenig@gcc.gnu.org>
>>
>>       * iresolve.c (resolve_mask_arg): If a mask is an array
>>       expression, convert it to kind=1.

OK. Please re-test before committing, because I haven't applied &&
tested it myself.

Thanks,
FX