reorganization

Makefile.am

c_utils/walltime_c.c

c_utils/walltime_c.h

libsharp/sharp.c

libsharp/sharp.h

libsharp/sharp_almhelpers.c

libsharp/sharp_almhelpers.h

libsharp/sharp_core.c

libsharp/sharp_core_inc.c

libsharp/sharp_cxx.h

libsharp/sharp_geomhelpers.c

libsharp/sharp_geomhelpers.h

libsharp/sharp_internal.h

libsharp/sharp_legendre_roots.c

libsharp/sharp_mpi.c

libsharp/sharp_mpi.h

libsharp/sharp_utils.c

libsharp/sharp_utils.h

libsharp/sharp_ylmgen_c.c

test/memusage.c