Comments inside /etc/pf.conf

[Lars D . Noodén]

Since pf.conf must be in a specific order, it might help to have comments 
marking out this order in the sample confguraton file.

Below is a diff from the current file.
Regards,
-Lars

6a7,9
##
## MACROS

9a13,15
## 
## TABLES

11a18,20
##
## OPTIONS

13a23,25

## NORMALIZATION

15a28,33
##
## QUEUEING

##
## TRANSLATION

23a42,44

##
## FILTERS