[m-dev.] cleanup of runtime/*

[Tyson Richard DOWD]

> 
> - There's 4-space indenting in deep_copy.c. Inconsistent. Maybe it's
>   justified. (This is not relevant to your diff, but just a general
>   observation.)
> 

There's also a comment

/*
** Due to the depth of the control here, we'll use 4 space indentation.
*/

It's inconsistent, but due to the need for two levels of switches, and
some tests, but still retaining reasonable efficiency, it's just easier
to have 4 space tabs.

-- 
       Tyson Dowd           #          Another great idea from the 
                            #            people who brought you
      trd at .cs.mu.oz.au      #               Beer Milkshakes!
http://www.cs.mu.oz.au/~trd #	         Confidence --- Red Dwarf