MFH r221820, r221821, r221822: increase WARNS
MFH r221830: mark all descriptors close-on-exec
MFH r225813: man page fixes
MFH r225814: adjust copyright statement
MFH r226537: latin1 -> utf8
MFH r230307, r230478: fix SIGINFO infinite loop and data loss
MFH r233648: man page fixes
MFH r234138: support percent-encoded user and password
MFH r234837: avoid busy-loop on slow connections
MFH r234838: don't reuse credentials when redirected to another host
MFH r236193: avoid SIGPIPE on network connections
MFH r240496: use libmd if and only if OpenSSL is not available