OCLint 0.4.3.277

* Added benchmark, use -stats to show
* Smarter tree traversing policy, change traversing policy based on current node type
* Extract Driver logic from main.cpp to separate class
* Load clang header files by default, there is no need to put it into the header search path manually
* Enable automatic reference counting (ARC) with -fobjc-arc flag
* Automated PackageMaker for pkg installer generation
* Code formatting