Small changes to readme for currency contract usage on noon

Up stake for new accounts made with eosioc

Support Multiple Currencies in a single contract

Updated the ABI, fixed implementation of `get_currency_balance` in the tester, separated out currency tests, added verification that balances are what is expected

repair ability to push transactions via eosioc on noon

Unify mongodb test stat477

Make Noon branch logic the default so existing tests won't need to be updated. Fixed a bug in --dump-error-details handling.

Make ctest names unique. Make noon branch behavior the default (Changed option '--noon' to '--not-noon'.

Increase the threshold on which net_plugin just sends the txn

(instead of notice/request dance)

Remove WASM's standard memory operators

We've made the decision that sbrk is the way contracts will grow memory. So, remove access to WASM's standardized memory opcodes. As it stood, these subverted our expected memory management.

Validate "string pointers" for wasm are entirely in active pages

Error and exit on missing explicit config file. Resolves #1109.

There are a couple native methods callable from WASM where the methods expect a NULL terminated char array (a string). Validate that the string lives entirely within active pages before dispatching it. Otherwise native code could segv if given a non-null-terminated string on the end of active pages.

[eos-noon] introducing ctest: test runner by cmake toolset

 Check wasm->native pointer validity based on active pages

DAWN-250 GH-1081 merge to noon branch

#1132 cmake macro add_wast_target fix