restore logging on mac for 0.9.15 as well (
r91752f716d64)
fix 0.9.15 compilation when debugfile is not specified (there is a better fix already in trunk)
Merge trunk into 0.9.15, excluding CMakeLists.txt and ChangeLog.txt - this should fix snowball again, pick up some more translation changes, hide the seed button by default and fix a couple of frontend desyncs