Merge pull request #192 in HDFFV/hdf5 from ~DEROBINS/hdf5_der:cache_image_partial to cache_image
Bring over changes from develop
* commit 'fc8fb1481488c88df87dadda9564d611f4cf7301':
Fixed a compiler warning in H5C.c.
Remove 'clear' callback from metadata cache client interface, using the new 'entry cleaned' notify action innstead.
Remove explicit support within the metadata cache for tracked compressed entries, they are now completely handled in the clients.
Repair comment chars to C style
Description: Removed H5_NO_NAMESPACE from the examples. They were missed from the previous cleanup. Platforms tested: Linux/32 2.6 (jam) Linux/64 (platypus)
