Updating the header licensing comments.

indra/llrender/llrendernavprim.cpp

indra/llrender/llrendernavprim.h

indra/newview/llfloaterpathfindingcharacters.cpp

indra/newview/llfloaterpathfindingcharacters.h

indra/newview/llfloaterpathfindingconsole.cpp

indra/newview/llfloaterpathfindingconsole.h

indra/newview/llfloaterpathfindinglinksets.cpp

indra/newview/llfloaterpathfindinglinksets.h

indra/newview/llfloaterpathfindingobjects.cpp

indra/newview/llfloaterpathfindingobjects.h

indra/newview/llpathfindingcharacter.cpp

indra/newview/llpathfindingcharacter.h

indra/newview/llpathfindingcharacterlist.cpp

indra/newview/llpathfindingcharacterlist.h

indra/newview/llpathfindinglinkset.cpp

indra/newview/llpathfindinglinkset.h

indra/newview/llpathfindinglinksetlist.cpp

indra/newview/llpathfindinglinksetlist.h

indra/newview/llpathfindingmanager.cpp

indra/newview/llpathfindingmanager.h