[Fortran-Dev, committed] Set elem_len and use proper element size for stride handling

[Dominique Dhumieres]

Dear Tobias,

First, The bootstrap problem I have seen seems to be gone.
I have posted the results for the gfortran test suite at

http://gcc.gnu.org/ml/gcc-testresults/2013-05/msg00675.html

with revision 198627 reverted. I don't see any failure for
gfortran.dg/mvbits_8.f90, but valgrins complains.
I also see

FAIL: gfortran.dg/coarray_12.f90  -O   scan-tree-dump-times original "a.dim.0..extent = MAX_EXPR <.*nn, 0>;" 1

with -m32 and if I grep for MAX_EXPR in the dump, I see

        a.dim[0].extent = MAX_EXPR <NON_LVALUE_EXPR <nn>, 0>;

Cheers,

Dominique