[Mimedefang] Configure Paths (MD 2.20)

[Rich West]

Actually, this behavior has been exhibited for some time.. It's not an 
uncommon build practice when the a package relies on files from another 
package which are typically not installed on to the system..

-Rich


>    IMO, this is bad:
>
>checking for libmilter/mfapi.h... ../sendmail-8.12.6/include/libmilter/mfapi.h
>checking for libmilter.a...
>../sendmail-8.12.6/obj.Linux.2.4.18-10.i586/libmilter/libmilter.a
>
>    Just because I happen to have my sendmail source one level up doesn't mean
>it should be looking there.  After removing said source and deleting
>config.cache, it looking in the right location:
>
>checking for libmilter/mfapi.h... /usr/local/include/sendmail/libmilter/mfapi.h
>
>checking for libmilter.a... /usr/local/lib/libmilter.a
>
>  
>