New state of the debug flags

[Ian Bruene]

After consolidating the relevant macros into ntp_debug.h and cleaning up 
all of the simple if(debug)s I have done another grep through the 
codebase. It appears that there aren't anymore cases where it is worth 
creating a macro for debugging. What's left is either blocks of custom 
computation, code triggered by different symbols, or code not repeated 
enough to be worth changing.

-- 
In the end; what separates a Man, from a Slave? Money? Power?
No. A Man Chooses, a Slave Obeys. -- Andrew Ryan