[Swan-dev] resolve_myid()

[D. Hugh Redelmeier]

What's the point of resolve_myid()?  It seems like it doesn't do anything 
(formally: it is the identity function).  Did it formerly have a 
purpose?  Does it have a future purpose?

If it is pointless, let's get rid of it.  And the sourcefile lswid.c that 
contains only the definition of resolve_myid().

If it has a point, let's document it in comments on the function 
definition.