hdf5_ep

[svn-r5131] Purpose:
    Code cleanup
Description:
    The function pointer for doing parallel I/O was being set in the H5D_read
    and H5D_write routines instead of in H5S_conv, where it belongs.
Solution:
    Added an extra 'flags' parameter to H5S_find to allow the function to
    determine when to set the MPIO functions instead of the regular optimized
    I/O routines and get rid of code messing with the function pointer in the
    H5D routines.
Platforms tested:
    IRIX64 6.5 (modi4)