Remove unneeded current_tm definition
IWYU name.c
Remove unused teleg_send.  Almost all files were pullingin a prototype from teleg_send.h, but using the implementation from tele.c.  This change corrects that mistake.
IWYU orbit.c
Remove extra externs declarations
IWYU order.c
IWYU perm.c
IWYU powercmd.c
Remove stray read_teleg.h include
Remove unused read_teleg.*
IWYU prof.c
IWYU rand.c and comment cleanups