hdf5_ep

[svn-r5257] Purpose:
    Bug fix
Description:
    $(LT_RUN) was used to execute ./H5detect in src/Makefile.in.
    $RUNTEST was set to $(LT_RUN) which was used to execute sequential
    executable.  $(LT_RUN) is "../libtool --mode=execute".  But libtool
    invokes some commands that are not supported in the Tflops machine.
    That caused failures during the build and check processes.
Solution:
    Upon investigation, there does not seem to be need to use $(LT_RUN)
    any more.  The "libtool --mode=link" now generates a "fake" executable
    that is actually a command-script file that can regenerate the real
    executable with dynamic libraries hooks setup properly.
    Undo all those $LT_RUN substitute and let $RUNSERIAL execute those
    sequential executables.
Platforms tested:
    Eirene(serial), modi4(parallel)