branch.
Removed the configure option that allows selective disabling of individual
internal filters (fletcher32, shuffle, etc.).
This feature mucked up the code with a lot of #ifdefs, saved very little space,
and was not scalable to a general scheme for library size reduction. We've
decided to remove the feature while we investigate a more general scheme for
decreasing the library size.
Part of: HDFFV-9086
Tested on: h5committest