Add a new API function SSL_CTX_use_certificate_chain() that allows to read the PEM-encoded certificate chain from memory instead of a file. This idea is derived from an older implementation in relayd that was needed to use the function with a privep'ed process in a chroot. Now it is time to get it into LibreSSL to make the API more privsep- friendly and to make it available for other programs and the ressl library.
— reyk