Fix GNU builds.

src/doors/ny2008/src/Makefile

src/doors/ny2008/src/aedit.cpp

src/doors/ny2008/src/fights.cpp

src/doors/ny2008/src/fights.h

src/doors/ny2008/src/ibbsny.cpp

src/doors/ny2008/src/ibbsny.h

src/doors/ny2008/src/igmsup.cpp

src/doors/ny2008/src/medit.cpp

src/doors/ny2008/src/ny2008.cpp

src/doors/ny2008/src/ny2008.h

src/doors/ny2008/src/nyedit.cpp

src/doors/ny2008/src/nyedit.h

src/doors/ny2008/src/nyibbs.cpp

src/doors/ny2008/src/second.cpp

src/doors/ny2008/src/structs.h