Update license info. COPYING hash updated because of added reference to
additional licenses. Licenses for local snprintf and getopt
implementations do not apply, since this code is not used for Linux
targets.
Add Tatu Ylonen Permissive license of the code in pseudo.c.
Add LGPL-2.0+ license text file.
Rename BSD-3-Clause text file and update hash because of text formatting
change.
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
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