Use std::call_once
Merge branch 'master' of github.com:Constellation/iv
Remove JSName
Implement SameValueZero and HashZero
Use SameValueZero for Map and Set
Fix test fixture path
Fix Map / Set tests for SameValueZero
Add backward library and link it to lv5 shell
Fix CR
Add workaround for WIN32 threads
Bundle gc to liblv5
Import mz-cmaketools
Use mz_merge_static_library to generate all-in-one static library
Merge branch 'master' of github.com:Constellation/iv

Conflicts:
	iv/lv5/CMakeLists.txt
Only load mz_merge_static_libraries
Only load mz_merge_static_libraries
Merge branch 'master' of github.com:Constellation/iv

Conflicts:
	CMakeLists.txt
	third_party/mz-cmaketools/compiler.cmake
	third_party/mz-cmaketools/global.cmake
Fix win32 build
Merge branch 'master' into llvm

Conflicts:
	iv/lv5/CMakeLists.txt
	iv/lv5/third_party/gc/CMakeLists.txt