h4h5tools

Store attributes related to dimensional scale as null-terminated string.

H5DS APIs assumes that "CLASS" attribute is null-terminated, but h4toh5 has stored the attribute without null. "DIMENSION_SCALE" was 15-bytes-long scalar space while H5DS APIs expected "DIMENSION_SCALE\0" which is 16-bytes-long.

Due to this difference, H5DSis_scale() says this is not dimensional scale, and netCDF4 couldn't recognize dimensional scales. Under all platforms except GNU/Linux 64, this fault was not revealed.