vchoi_fork

[svn-r3288] Purpose:
    Bug fix (sort of)
    (H5FDgass.c: just deleted an old code. Nothing to do with this fix.)
Description:
    When --enable-debug=all was used, couple routine printf warnings
    to stderr that it is an expensive operation.  This messed up
    the testing of h5ls since it included stderr output in its expected
    output and did not expect the extra messages.
Solution:
    Changed it such that the extra messages are printed only
    if the appropriate h5-debug-class setting is on (via environment
    variables, for example).
Platforms tested:
    eirene (debug=all), modi4(parallel,-64,default configure).