Adding distributed transfer transaction validation test. Add python3 dependency to travis script. Explicitly invoke python3 in test script. Cmake copies test script to builds directory. Test driver (run_tests.sh) tracks test failures and returns failures count.

disabling all but the eosd_run_test.sh test for now. #691

* Remove the "@abi type" annotation support, now typedefs are automatically included when needed
* Add ABI annotations to proxy contract types
* Fix ABI generation tests
* Fix travis call to tests
* Fix exchange typedef declaration

Ref #535

* Add typedef support
* Add more tests to abi_generator lib
* Use EOSLIB enviroment variable when running chain_test (travis)
* Fix exchange contract anotations

Ref #535

window. #691