Remove recursive inclusions

src/cluster/cluster.cpp

src/cluster/np_cluster.cpp

src/include/Commons.h

src/include/Configuration.h

src/include/List.h

src/include/clu_subs.h

src/include/sph_subs.h

src/include/tra_subs.h

src/libnptm/Commons.cpp

src/libnptm/Configuration.cpp

src/libnptm/clu_subs.cpp

src/libnptm/sph_subs.cpp

src/libnptm/tra_subs.cpp

src/sphere/np_sphere.cpp

src/sphere/sphere.cpp

src/trapping/frfme.cpp

src/trapping/lffft.cpp