Revert "Add a find_package(Clang) for abi_generator"

Add a find_package(Clang) for abi_generator

Test framework improvement - stat576

Test porting

Re-updated submodules that were lost merging #1421

Update contracts.dox

Fixed typo in line 33.  "give" to "given"

P2p queue unity master

Make Jenkins only run one build's tests at a time.

Eosio readme tag checkout DAWN-2018-01-25

Fix typo & correct Boost URL

Merging master branch before PR update

fix warnings in many contracts

Import (from Dawn2x branch) test updates - stat614

abi_generator doesn't just use LLVM libraries, but Clang libraries too. Adding this declaration makes things work right when there are multiple clang libaries on a single system

Fix API for Multi Index

1. no longer need to specify index number
2. no longer need to specify type multiple times
3. clean up unnecessary references
4. remove member variables that are not needed
5. implement store for index
6. implement find iterator for secondary given primary key

change printf to echo for build on mac error message