Bug fix for HDFFV-8689 : Mix-match of type in H5D_CHUNK_CACHE_NBYTES_DEFAULT, Review HDF5-184

Tested with -i8 flag with intel compilers and --enable-production




git-svn-id: https://svn.hdfgroup.uiuc.edu/hdf5/trunk@24846 dab4d1a6-ed17-0410-a064-d1ae371a2980