[patch, fortran, committed] Fix PR 62214

[Thomas Koenig]

Hello world,

the attached patch fixes the PR.  Committed to trunk as obvious after
regression-testing.  Will commit to 4.9 and 4.8 after regression
testing there.

Any idea why rather so many rather old bugs are coming up all of a
sudden?  Did a major distribution just upgrade its gcc version?

Regards

	Thomas

2014-08-21  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/62214
        * frontend-passes.c (optimize_binop_array_assignment):
        Do not try to optimize the array assignment for string
        concatenation.

2014-08-21  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/62214
        * gfortran.dg/array_assignment_5.f90:  New test.
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