dependency.c (gfc_check_dependency): Call gfc_dep_resolver to check whether two array...

dependency.c (gfc_check_dependency): Call gfc_dep_resolver to check whether two array references have a dependency.

	* dependency.c (gfc_check_dependency): Call gfc_dep_resolver to
	check whether two array references have a dependency.
	(gfc_check_element_vs_element): Assume lref and rref must be
	REF_ARRAYs.  If gfc_dep_compare_expr returns -2, assume these
	references could potentially overlap.
	(gfc_dep_resolver): Whitespace and comment tweaks.  Assume a
	dependency if the references have different depths.  Rewrite
	final term to clarrify we only have a dependency for overlaps.

	* gfortran.dg/dependency_4.f90: New test case.
	* gfortran.dg/dependency_5.f90: New test case.
	* gfortran.dg/dependency_6.f90: New test case.
	* gfortran.dg/dependency_7.f90: New test case.
	* gfortran.dg/dependency_8.f90: New test case.

From-SVN: r111686