add openssl 1.1 support
cherry picked from Release-9.0.5..Release-9.0.6 diff
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48dee63af - (HEAD -> Release-7.4.7-openssl-1.1) crypto: Use DEFINE_STACK_OF() (8 minutes ago) <Sebastian Andrzej Siewior>
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87d8e1b79 - Add openssl-compat.h which went in wrong directory (9 minutes ago) <Kern Sibbald>
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df291f655 - crypto: convert EVP_PKEY access and remainings bits for OpenSSL 1.1 (10 minutes ago) <Sebastian Andrzej Siewior>
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bd10d660c - crypto: convert EVP_MD_CTX + EVP_CIPHER_CTX to OpenSSL 1.1 (10 minutes ago) <Sebastian Andrzej Siewior>
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2dd84566f - crypto: remove support for ancient openssl (13 minutes ago) <Sebastian Andrzej Siewior>
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57aa25293 - (tag: Release-7.4.7) Update version date (1 year, 8 months ago) <Kern Sibbald>