AppendIfNoSuchLine in 2.0.6

[Chip Seraphine]

I've run a lot more tests, and am finding that the AppendIfNoSuchLine 
function is definitely causing problems with 2.0.6 that do not happen in 
2.0.5.  Specifically, it appends the raw pattern to be matched instead 
of the previous SetLine value.

A diff of editfiles.c between 2.0.6 (<) and 2.0.5 (>) shows this:

552c530
<                   AppendItem(&filestart,expdata,NULL);
---
>                   AppendItem(&filestart,EDITBUFF,NULL);

I'm not overly familiar with the cfengine code, but this surely seems to 
be a deliberate change-- the edit buffer was replaced with the 
expression data, which is exactly what I am seeing in my files.

Does anybody know why this was done?  Is it safe to roll back this change?