Renamed DATATYPE_ to CDI_DATATYPE_.

app/cdi.c

app/printinfo.h

doc/tex/attribute.tex

doc/tex/c_cdi_att.tex

doc/tex/c_vlist_var.tex

doc/tex/f_cdi_att.tex

doc/tex/f_vlist_var.tex

doc/tex/variable.tex

examples/cdi_read_atts.f

examples/pio/compareResourcesArray.c

src/cdf_read.c

src/cdf_write.c

src/cdi.h

src/cdi_att.c

src/gribapi_utilities.c

src/grid.c

src/institution.c

src/mo_cdi.f90

src/model.c

src/pio_mpi_fw_at_all.c