build: Rename unixcat naemon-unixcat

Another project with a very similar name already provides something in
/usr/bin/unixcat which causes conflicts.

Signed-off-by: Robin Sonefors <ozamosi@flukkost.nu>
configure.ac: Add to lines I was told I needed

I am autoconfig's bitch.

Signed-off-by: Robin Sonefors <ozamosi@flukkost.nu>
build: Use CFLAGS when building livestatus

This allows you to do things like make CFLAGS=$(pwd)/../naemon-core to
make the build pass when naemon-core hasn't been installed yet.

Signed-off-by: Robin Sonefors <ozamosi@flukkost.nu>
makefile: Remove things that appears useless

If they're not, someone better document why it's there ;)

Signed-off-by: Robin Sonefors <ozamosi@flukkost.nu>