* Changed genrevision to use * instead of unknown when some info can not be found
* Added the git_id tool which is used to generate changes to revision_nr.h and the commit message
Also svn_revision.h renmaed to revision.h and defines in to it also renamed. MaNGOS code updated.
Other projects using this genrevison tool need to be updated in similar way.
gvnrevision still support svn version generation and have addition options now (see sources).
gensvnrevision/svn_revision.h and other svn reference will fixed later.
Now version strings include commit date/time that can be used in git case for fast find git commit without using git hash most time.
In chat ".server info" output git hash can be copied by shift-click in chat and then copied to cliboard if need.
