Bring r24020 from trunk to 1.8 branch:
Clean up compiler warnings
Tested on:
Mac OSX/64 10.8.4 (amazon) w/C++ & FORTRAN
(too minor to require h5committest)
Merge 1.8 and h5dump/tools and tests based on tools library from trunk.
Reduced warnings.
HDFFV-7949:
Remove duplicated functions in h5ls
Tested: local linux,h5committest