primary.c: New private structure "gfc_structure_ctor_component".

2008-05-16  Daniel Kraft  <d@domob.eu>

        * primary.c:  New private structure "gfc_structure_ctor_component".
        (gfc_free_structure_ctor_component):  New helper function.
        (gfc_match_structure_constructor):  Extended largely to support named
        arguments and default initialization for structure constructors.

2008-05-16  Daniel Kraft  <d@domob.eu>

        * gfortran.dg/private_type_6.f90:  Adapted expected error messages.
        * gfortran.dg/structure_constructor_1.f03:  New test.
        * gfortran.dg/structure_constructor_2.f03:  New test.
        * gfortran.dg/structure_constructor_3.f03:  New test.
        * gfortran.dg/structure_constructor_4.f03:  New test.
        * gfortran.dg/structure_constructor_5.f03:  New test.
        * gfortran.dg/structure_constructor_6.f03:  New test.
        * gfortran.dg/structure_constructor_7.f03:  New test.
        * gfortran.dg/structure_constructor_8.f03:  New test.
        * gfortran.dg/structure_constructor_9.f90:  New test.

From-SVN: r135410