Slightly faster "make all-depends-list"

[Stephen Montgomery-Smith]

Stephen Montgomery-Smith wrote:
> Here is a C program that does the same as "make all-depends-list" but 
> runs four threads at once.  I get small time increases on a regular 
> computer, and twice the speed on dual processor systems.
> 
> e.g.
> all-depends-list /usr/ports/x11/xorg
> 


The attachment didn't take.  Here it is:

http://www.math.missouri.edu/~stephen/all-depends-list.c