hdf5

[svn-r17470] Bug fix:

 Bug 1653 -  H5_LINK_* values defined in H5f90global.f90 are incorrect

The Fortran EQUIVALENCE constant variables did not match those from the C definitions, fixed.

Missed because there is not a Fortran test function that uses these constants. 

Tested: smirom (ifort, g95)