libgomp/

	libgomp/
	* libgomp.map: Add 4.0.2 version.
	* target.c (offload_image_descr): Add version field.
	(gomp_load_image_to_device): Add version argument.  Adjust plugin
	call.  Improve load mismatch diagnostic.
	(gomp_unload_image_from_device): Add version argument.  Adjust plugin
	call.
	(GOMP_offload_regster): Make stub function, move bulk to ...
	(GOMP_offload_register_ver): ... here.  Process version argument.
	(GOMP_offload_unregister): Make stub function, move bulk to ...
	(GOMP_offload_unregister_ver): ... here.  Process version argument.
	(gomp_init_device): Process version field.
	(gomp_unload_device): Process version field.
	(gomp_load_plugin_for_device): Reimplement DLSYM & DLSYM_OPT
	macros.  Check plugin version.
	* libgomp.h (gomp_device_descr): Add version function field.  Adjust
	loader and unloader types.
	* oacc-host.c: Include gomp-constants.h.
	(host_version): New.
	(host_load_image, host_unload_image): Adjust.
	(host_dispatch): Add host_version.
	* plugin/plugin-nvptx.c: Include gomp-constants.h.
	(GOMP_OFFLOAD_version): New.
	(GOMP_OFFLOAD_load_image): Add version arg and check it.
	(GOMP_OFFLOAD_unload_image): Likewise.
	* plugin/plugin-host.c: Include gomp-constants.h.
	(GOMP_OFFLOAD_version): New.
	(GOMP_OFFLOAD_load_image): Add version arg.
	(GOMP_OFFLOAD_unload_image): Likewise.

	liboffloadmic/
	* plugin/libgomp-plugin-intelmic.cpp (GOMP_OFFLOAD_version): New.
	(GOMP_OFFLOAD_load_image): Add version arg and check it.
	(GOMP_OFFLOAD_unload_image): Likewise.

	include/
	* gomp-constants.h (GOMP_VERSION, GOMP_VERSION_NVIDIA_PTX,
	GOMP_VERSION_INTEL_MIC): New.
	(GOMP_VERSION_PACK, GOMP_VERSION_LIB, GOMP_VERSION_DEV): New.

	gcc/
	* config/nvptx/mkoffload.c (process): Replace
	GOMP_offload_{,un}register with GOMP_offload_{,un}register_ver.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@227137 138bc75d-0d04-0410-961f-82ee72b054a4