Revert "Expose tls_server_conf_free() and use it for home->tls"

This reverts commit 7c5a3730b5ba8bdac35ad43fe735a44ffefd55c8.

It's the wrong fix
Use talloc destructor for tls_server_conf_free
One more destructor for conf_free
Prefer IP_PKTINFO to IP_RECVDSTADDR, if both are defined
scan warnings for unused assignments
scan warnings
Scan warnings
scan warnings
Both name2's may be NULL
scan warnings
scan warnings
scan warnings
scan warnings
scan warnings
Add note on set_auth_type
Add UDP checksum validation to radsniff
Free ssn->ssl on error
Typo fix in man radiusd(8)

The ``see also'' section contained a reference to rradiusd.conf(5), which of
course should be written with a single ``r''
Fixup variable and definition names in rbtree code
constify things properly in fr_udp_checksum