Merge branch 'PHP-5.6' into PHP-7.0

diff --cc ext/openssl/tests/openssl_csr_sign_basic.phpt
Simple merge

diff --cc ext/openssl/tests/openssl_pkcs7_decrypt_error.phpt
Simple merge

diff --cc ext/openssl/tests/openssl_pkey_export_basic.phpt
Simple merge

diff --cc ext/openssl/tests/openssl_x509_export_basic.phpt
Simple merge