implement typecode 10 parsing

returns a list with two elements, keys and values. There isn't an
obvious R counterpart for this type
type
added support for typecode 9 and 10 and treats >50 as raw unless rmr-specific
completed type_code 9

too many copies, need cleaner approach eventually
uniform spelling for typedbytes
hbase format, backend params for IO
how come this change doesn't stick?
raw don't sort
typecode 10 ->data frame and clean up redundant wraps
we shouldn't need those package specfiers
Merge branch 'master' into hbase-io
using dappervision for now
debugging
remove debugging
can't to nested data frames
accept multipl cols
prevent maps from being merged
special case lists as maps for hbase
some debugging line
again adjusting the mapping between hbase nested maps and R