hdf5_ep

[svn-r15945] redo the
use of
H5_PRINTF_LL_WIDTH
in the definition of 
#define HSIZE_T_FORMAT   "%"H5_PRINTF_LL_WIDTH"u"

the printing of "unknow u" in tg-login3.
for unsigned long long was a  configure bug fixed by rev 15942

tested: tg-login3