[patch, fortran] Fix PR 36341, compile-time part

[Thomas Koenig]

Hello world,

this fixes the compile-time part of PR 36341, where the shape of matmul
wasn't calculated from its arguments if these were known.

Dominique reported a Heisenbug found during testing in the PR, which may
or may not have  I can't really think what may have caused this, but I'd
like to get a bit more feedback before committing.

Regression-tested on i686-pc-linux-gnu, without any more regressions
than those in PR 36458 and PR 36534, which are unrelated.

OK for trunk?

	Thomas

2008-06-29  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/36341
	* iresolve.c (gfc_resolve_matmul): Copy shapes
	from arguments.

2008-06-29  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/36341
	* gfortran.dg/matmul_bounds_1.f90:  New test.

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