decl.c (gnat_to_gnu_entity): Do not specifically deal with external constants wrt force_global here...

	* gcc-interface/decl.c (gnat_to_gnu_entity): Do not specifically deal
	with external constants wrt force_global here...
	<E_Constant>: ...but here instead.
	* gcc-interface/utils.c (gnat_pushdecl): Do not put external DECLs onto
	the list of global DECLs.

From-SVN: r188379