* use proper constness:
* make some functions take arguments of `const char*` rather than just `char*` (also modified some functions' return values to return `const char*` where appropiate)
* modify rank retrieval functions to use a central array instead; currently ranklimits (i.e. the amount of kills required to promote) is hardcoded in switch statements, as is the case with the names of those ranks
* `make -C po update-po`
git-svn-id: svn+ssh://svn.gna.org/svn/warzone/trunk@1409 4a71c877-e1ca-e34f-864e-861f7616d084