begin restoring the test_api contract interface, pull results out of the apply_context into chain controller

Added test for basic wasm contract loading/unloading.  Fixed bugs in the intrinsic code and made it impossible to complile with the same class of bugs in the future.  Did some basic style/renaming in the contracts directory and in the enclosed tutorial/doxygen files

in key64x64x64 index.
* Refactor of record access functions (WIP)
* Fix tests (WIP)
Ref #547

* Implement and test triple i64 record functions