vchoi_fork

[svn-r2774] H5FD.c:
Purpose:
    Bug fix
Description:
    H5FD_close() wiped clean the public information before
    closing the FD.  This caused problem to the lower level
    close() which wants to verify it has indeed handed a valid
    file-driver to close because that information is wiped out
    prematurely.
Solution:
    Moved the public information part cleaning after it is closed.

H5FDmpio.c:
    Added in a bunch of assertion to make sure the file handle is indeed
    an MPIO file.

Platforms tested:
    IRIX64 -64 parallel