New testsuite failures: Substring reference of nonscalar

[David Edelsohn]

I'm seeing hundred of new Fortran testsuite failures that first
appeared late on 9 October. Also present on x86 and other
architectures.

Error: Substring reference of nonscalar not permitted at (1)

arrayio_11.f90
arrayio_12.f90
associate_23.f90
data_char_1.f90
deferred_character_2.f90
deferred_character_22.f90
deferred_character_23.f90
deferred_character_8.f90
deferred_type_component_3.f90
...