berkeley DB incompatibility issue

[philpennock]

Following the README install steps, compilation fails in record.c because #include finds /usr/local/include/db.h instead of /usr/include/db.h and the berkeley-db 6.2.23 installed is missing various #define fields such as R_NOOVERWRITE.

Using brew unlink berkeley-db (and doing ./configure again for safety) was enough to get a passing build where the one command I cared about (tcpkill) works, no idea if the DB-impacted tools have problems.