Missing dependencies on identity test contract

libc/libcxx were not listed as dependencies on the identity test contract making highly parallel builds fail if it queued up that test before finishing the base contracts

feat(scope): Scope was missing from the api for single index tables.

Stltest cleanup

Progress on Multi-Index API

rename eos_assert to eosio_assert, implement is_account() api, and move implementation from apply_context.hpp to .cpp

Changes from Greg Lee.

explode the results of get_block

Add block structures to the list of things that may contain ABI-related data in abi_serializer.  fix duplicated native ABI when no wasm API has been published

Support proper spec compliant call_indirect wast syntax

Fix eosiod run test

The wasm spec has a different definition for the call_indirect syntax in textual representation then what we currently support. Add code to support the spec’s syntax as newer binaryen (s2wasm) seems to use the spec’s syntax.

Be aware, this might still not be TECHNICALLY to spec — I think the spec may allow for defining the function prototype right at the call_indirect site. We only support usage of a type name or type index at the call_indirect site.