[syslog-ng] [PATCH 0/1]: value-pairs: key rewriting support

[Gergely Nagy]

After going over the code a few more times, and after a quick chat
with Bazsi, I cleaned up the patch considerably. So much so, that I'm
actually starting to like it!

Functionality remained the same, but the code behind it is shorter and
contains less magic. Instead of playing tricks with both scratch
buffers and allocating gchar* strings all over the place, the
transformation functions now operate directly on scratch buffers, and
we steal the results.

The patch coming in a follow-up message is something I consider ready
for review. The only thing left to do is adding a couple of test cases
(there's already a simple one included, but I'd like a few more).