hdf5_msb

[svn-r10690] Purpose:
Bug fix

Description:
On visual studio 6.0, conversion from unsigned long long to double is not supported.
Even during compilation stage, it will fail.


Solution:
Albert changed the way the macro is handled so that for windowx MSVS 6.0,
the code that has conversion from unsigned long long to double will not compile.

Platforms tested:
windows, linux

Misc. update: