Change to SPDX License format

Replaced COPYING with a description of how the SPDX identifiers are used.
Added a GPL-2.0 and LGPL-2.1 license file in the new LICENSES directory.
Then removed all the license templates from the source files and replaced
them with the corresponding SPDX identifier.

Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
80 files changed