Update version number to 2.99.47 to match buildDate.cxx.
Update version number to 2.99.47 to match buildDate.cxx.


kongr45gpen/bzflag-import-1,kongr45gpen/bzflag-import-1,kongr45gpen/bzflag-import-1,kongr45gpen/bzflag-import-1,kongr45gpen/bzflag-import-1,kongr45gpen/bzflag-import-1