dired.c

[Andrea Crotti]

I was looking around the C code trying to understand better how
everything works and I noticed the following thing.

In the file dired.c there is an
#include <setjmp.h>

But no symbols in dired.c depend from that header, so I tried to remove
it and it turns out that it's needed in lisp.h, which is included later.

So why is not included in lisp.h instead?
What's the reason to do such a thing?

-- 
GNU Emacs 24.0.50.1 (x86_64-apple-darwin10.7.0, NS apple-appkit-1038.35)
of 2011-04-23