add ObjC* @property - tests
gcc/testsuite:

	* objc.dg/property: New.
	* objc.dg/property/fsf-property-basic.m: New.
	* objc.dg/property/fsf-property-method-access.m: New.
	* objc.dg/property/fsf-property-named-ivar.m: New.
	* objc.dg/property/property-1.m: New.
	* objc.dg/property/property-2.m: New.
	* objc.dg/property/property-3.m: New.
	* objc.dg/property/property-neg-1.m: New.
	* objc.dg/property/property-neg-2.m: New.
	* objc.dg/property/property-neg-3.m: New.
	* objc.dg/property/property-neg-4.m: New.
	* objc.dg/property/property-neg-5.m: New.
	* objc.dg/property/property-neg-6.m: New.
	* objc.dg/property/property-neg-7.m: New.
	* objc.dg/property/property.exp: New.
	* obj-c++.dg/property
	* obj-c++.dg/property/fsf-property-basic.mm
	* obj-c++.dg/property/fsf-property-method-access.mm
	* obj-c++.dg/property/fsf-property-named-ivar.mm
	* obj-c++.dg/property/property-0.mm
	* obj-c++.dg/property/property-1.mm
	* obj-c++.dg/property/property-2.mm
	* obj-c++.dg/property/property-3.mm
	* obj-c++.dg/property/property-neg-1.mm
	* obj-c++.dg/property/property-neg-2.mm
	* obj-c++.dg/property/property-neg-3.mm
	* obj-c++.dg/property/property-neg-4.mm
	* obj-c++.dg/property/property-neg-5.mm
	* obj-c++.dg/property/property-neg-6.mm
	* obj-c++.dg/property/property-neg-7.mm
	* obj-c++.dg/property/property.exp

From-SVN: r165480