[syslog-ng] [PATCH (3.4) 0/1]: Further value-pairs improvements

As hinted at earlier, I changed the internals of value-pairs to use a GPtrArray instead of a GHashTable, because of performance considerations, and other reasons. It turns out, that this is not as big a gain as I thought (my tests suggest that the improvement is well within the margin of error, after a dozen of test runs, each for 2 minutes of constant log sending, the difference is about 30 messages / sec). Nevertheless, I like PtrArrays better, not only due to the minor performance gain, but because I plan to reuse them later on for another feature. -- |8]