Object1.h: Add copyright header, update comments.

Object1.h: Add copyright header, update comments.

gcc/testsuite:

	* objc-obj-c++-shared/Object1.h: Add copyright header, update
	comments.  Add a TEST_SUITE_ADDITIONS category for GNU runtime.
	Amend NeXT version to declare a TEST_SUITE_ADDITIONS carrying the
	methods missing from the OBJC2 Object.
	* objc-obj-c++-shared/Object1-implementation.h: Add copyright header.
	Amend implementation to use a TEST_SUITE_ADDITIONS category for both GNU
	and NeXT runtimes.
	* objc-obj-c++-shared/Object1.mm: Remove redundant header, update
	comments.
	* objc-obj-c++-shared/Object1.m: Likewise.
	* objc.dg/encode-3.m: Update header use.  Amend to be API2 compatible.
	* objc.dg/proto-qual-1.m: Likewise.
	* obj-c++.dg/proto-lossage-3.mm: Likewise.
	* obj-c++.dg/proto-qual-1.mm: Likewise.

From-SVN: r168705