libssh-0.9.6 * CVE-2021-3634: Fix possible heap-buffer overflow when rekeying with different key exchange mechanism * Fix several memory leaks on error paths * Reset pending_call_state on disconnect * Fix handshake bug with AEAD ciphers and no HMAC overlap * Use OPENSSL_CRYPTO_LIBRARIES in CMake * Ignore request success and failure message if they are not expected * Support more identity files in configuration * Avoid setting compiler flags directly in CMake * Support build directories with special characters * Include stdlib.h to avoid crash in Windows * Fix sftp_new_channel constructs an invalid object * Fix Ninja multiple rules error * Several tests fixes