- pull in sbv's param mods drop with some additional porting
  make it compatible with 1.4 features.
- export some opaque types
- change some crypto hash functions to remove warnings
updates to restore R15 compatibility
add explanitory comment
client fix to stop breaking put/2
make eqc build again
reverse macro logic to favor forward compatability
Switch from Makefile to rebar.config.script for old_hash define
One missed new_hash ifdef
resolve author attribs conflict
Merge branch 'pevm-r16-compat2' of github.com:basho/riak_kv into pevm-r16-compat2
Merge pull request #602 from basho/pevm-r16-compat2

R16B01 compatibility changes.