[PATCH] headerdep: a tool for detecting inclusion cycles in headerfile

[Vegard Nossum]

Hi Sam,

Maybe something like this could be useful for cleaning up headers (and
maintaining that cleanliness once it has been achieved). What do you think?

(One thing which might or might not be good is that 'make headerdep' will
 also compile using CC if they're not already compiled. If this should be
 fixed, I think you'd know how to do it.)

Vegard