c-objc-common.c (c_tree_printer): For a typedef name, print the stripped version as well, if they're not the same.

	* c-objc-common.c (c_tree_printer) <case 'T'>: For a typedef name,
	print the stripped version as well, if they're not the same.

	* gcc.dg/diag-aka-1.c: New test.
	* gcc.dg/pr13804-1.c: Adjust dg-error.
	* gcc.dg/redecl-14.c: Likewise.
	* gcc.dg/pr56980.c: Adjust dg-message.

From-SVN: r216941