• MFC: lib/Makefile 1.155 libexec/Makefile 1.57 usr.bin/Makefile 1.234 (partly), 1.235
  
  Build non-crypto telnet(1) and telnetd(8) if NO_OPENSSL is defined.

• Replace the check for the non-existence of src/secure and src/kerberosIV with a check for the non-existence of src/crypto only. This is to bring these checks in line with the demise of the NOSECURE knob and because if src/crypto doesn't exist we won't build any crypto stuff including not Kerberos IV (and also not Kerberos 5 for that matter). Note: On HEAD all these checks for the existence of crypto sources even have been completely removed.

Discussed with: ru (some months ago)
Reviewed by: ru (some months ago)
Approved by: markm (telnet and secure bits, some months ago)