Another new exim

Hi Axel, I noticed there'd been another security update for exim so I 
thought I'd try packaging exim-4.74.

I dropped the 4.73-dynlookup patch because it's now incorporated, and I 
added a patch from git which fixes building against EL4 PCRE again.

I didn't bump the serial number because I thought I'd leave that to you 
if you approve. I haven't built on EL5, just EL4, and even then my EL4 
box (VM) has too recent a PostgreSQL (from centosplus) for my binary to 
run on a vanilla EL4. Still, it builds :-)

http://www.yuiop.co.uk/rpms/exim-4.74-44.el4.src.rpm

Cheers,

John.