Added 'link' option to ocloc CLI, which allows linking of
several IR files to single output file. Supported formats
of output file are ELF and LLVM BC.
Related-To: NEO-6163
Signed-off-by: Patryk Wrobel <patryk.wrobel@intel.com>
Dates corrected in copyright headers to reflect original publication date
(2018 for OpenCL, 2020 for Level Zero).
Signed-off-by: lgotszal <lukasz.gotszald@intel.com>