Prevented PRD use with changing box

src/MAKE/Makefile.mac

src/MANYBODY/pair_sw.h

src/REPLICA/prd.cpp

src/REPLICA/prd.h

src/USER-REAXC/fix_reaxc_species.cpp

src/USER-REAXC/fix_reaxc_species.h

src/USER-REAXC/pair_reax_c.cpp

src/USER-REAXC/pair_reax_c.h

src/USER-REAXC/reaxc_reset_tools.cpp