Signed-off-by: Nzhao_zhen_zhou <zhaozhenzhou@huawei.com>

Thanks to Juro Bystricky for the suggestion and prototype.
Reviewed-by: NRichard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/4644)

Add copyright to most .pl files
This does NOT cover any .pl file that has other copyright in it.
Most of those are Andy's but some are public domain.
Fix typo's in some existing files.
Reviewed-by: NRichard Levitte <levitte@openssl.org>

Reviewed-by: NRich Salz <rsalz@openssl.org>

Because ENGINESDIR and OPENSSLDIR typically contains backslashes, they
need to be escaped just right.
Reviewed-by: NRich Salz <rsalz@openssl.org>

Reviewed-by: NRich Salz <rsalz@openssl.org>

Reviewed-by: NTim Hudson <tjh@openssl.org>

Reviewed-by: NRichard Levitte <levitte@openssl.org>

is run with --strict-warnings.
Reviewed-by: NRichard Levitte <levitte@openssl.org>