[patch, fortran] PR 47659 - extend conversion warnings to assignments

[Thomas Koenig]

Hello Tobias,

>
> OK. Thanks for the patch!

Sende          fortran/ChangeLog
Sende          fortran/expr.c
Sende          testsuite/ChangeLog
Sende          testsuite/gfortran.dg/warn_conversion_2.f90
HinzufÃŒgen     testsuite/gfortran.dg/warn_conversion_3.f90
Ãœbertrage Daten .....
Revision 177942 ÃŒbertragen.

Thanks for the comments and the review!

	Thomas