WASM globals are disparate from WASM linear memory. Similar to how we reset linear memory after each invocation, we need to reset globals as well.

Linear memory is optional in WASM. Protect against crashes when a WASM doesn't use it.

Previously, the WASM "start" function would be called once right after compilation. This was problematic for two reasons. 1) It was called during a period of time not expected (not during any context), and 2) if the user was expecting the start function to be called for initialization it would not be called after the memory had been reset on subsequent apply() calls -- that could be a surprise.

Now call the WASM "start" function before each init() and apply().

@DAWN-390 fixed issue with sbrk not clearing between actions, and added page resizing to cache checkin to ensure page size goes back to default

rename scopes to locks from the perspective of the contracts, add account to the locks in shards and then deal with all the problems that caused

removed scope from transaction
renamed scope on action to account
added scopes to shard
fixed up scheduling and tests
fixed up eosioc

fixed bugs in error handling WRT database undo states, fixed bugs in contract-side parsing of deferred transactions, added published time and sender (if one exists) to the apply_context and wasm ABI

fixes the issues with the deferred transactions and inline messages, implement changes to the proxy and a test case

added tests for the WASM currency contract and fixed issues it exposed, refactored contract initialization as a require_recipient where the logic of init vs apply is now in the wasm_interface

restored db table objects, extracted scope,code,table triplet from tables into a table id, moved EOSIO tokens to use the same data model as wasm token contracts

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

switch to using unique_ptrs for intrinsic functions, the internal class for that library has copy and move constructors but if they are used then the classes will segfault on destruction due to the use of a singleton mapping that breaks semantics necessary for copies and moves to work

  Now we use the folder of the header file where the type is defined as the root context.
  Types declared in header files located in child sub-folders will also be exported.
* Code generator now complies with the new coding standard.
* Fix contract annotations.
* Fix simpledb / Use the generated functions to deserialize/dump messages.
* Add optional flag to eoscpp generate-abi command to also generate serialization helper functions for the types defined in the ABI file.
* Fix abi_tests.