be used by nodes to scan themselves without dealing with any crypto.
remove c++ stuff from tn binary, for a record low size:

-rwx------ 1 root root 6262 Nov  4 00:00 arch/armeb-sf/tn
-rwx------ 1 root root 6380 Nov  4 00:00 arch/armgeb-sf/tn
-rwx------ 1 root root 6316 Nov  4 00:00 arch/armgel-sf/tn
-rwx------ 1 root root 6172 Nov  4 00:00 arch/arm-sf/tn
-rwx------ 1 root root 8586 Nov  4 00:00 arch/mips1-sf/tn
-rwx------ 1 root root 8588 Nov  4 00:00 arch/mipsel1-sf/tn
-rwx------ 1 root root 7232 Nov  4 00:00 arch/ppc-sf/tn
-rwx------ 1 root root 5837 Nov  4 00:00 arch/sh4b-sf/tn
-rwx------ 1 root root 5773 Nov  4 00:00 arch/sh4l-sf/tn
-rwx------ 1 root root 5753 Nov  4 00:00 arch/x86/tn