Add bib entries for faithful and crimdata datasets in base R which are
the two outlier datasets in the protobuf vs R serialization
comparison.



git-svn-id: svn://svn.r-forge.r-project.org/svnroot/rprotobuf@915 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Improve section 6 to address referee feedback:

Replace massive full page 50 row table with a more succinct plot of
the relevant data points, and label the outliers of this plot so we
can talk about the interesting cases in the text.

Add a small 3-row table beneath the plot showing the data for the two
outliers plus the aggregate of all datasets.

Explain why protocol buffers are so much more space-efficient for one
dataset, and slightly less efficient for another.



git-svn-id: svn://svn.r-forge.r-project.org/svnroot/rprotobuf@916 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Oops left this out of previous submit, the code implementing the
serialization for environments, functions, and languages.  Could do
something better, especially for environments, but this is fine for
now.



git-svn-id: svn://svn.r-forge.r-project.org/svnroot/rprotobuf@917 edb9625f-4e0d-4859-8d74-9fd3b1da38cb