2015-09-10  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/66993
	* module.c (read_module): If a symtree exists and the symbol has
	been associated in a submodule from a parent (sub)module, attach
	the symbol to a 'unique symtree' and the new symbol to the
	existing symtree.

2015-09-10  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/66993
	* gfortran.dg/submodule_11.f08: New test.

From-SVN: r227648