Migrate to STL containers/algorithms.

src/chat.cpp

src/chat.h

src/client.cpp

src/client.h

src/clientmap.cpp

src/clientmap.h

src/clientobject.cpp

src/clientobject.h

src/connection.cpp

src/connection.h

src/content_abm.cpp

src/content_cao.cpp

src/content_mapblock.cpp

src/content_sao.cpp

src/debug.cpp

src/debug.h

src/emerge.cpp

src/environment.cpp

src/environment.h

src/farmesh.cpp