-trace_mpath: added mapping fun to state. All logged messages will be mapped with the given mapping fun e.g. for space saving purposes. The identity fun will be used if no user defined mapping fun is given.
-trace_mpath: added mapping fun to state. All logged messages will be mapped with the given mapping fun e.g. for space saving purposes. The identity fun will be used if no user defined mapping fun is given.

git-svn-id: d89f83fc72fb49d2f5b112dfb73cea192610bdff@3421 71766da9-9752-0410-ab17-bfafa751c56a

fredrikelinder/scalaris,fredrikelinder/scalaris,fredrikelinder/scalaris,fredrikelinder/scalaris,fredrikelinder/scalaris,fredrikelinder/scalaris