Refine the sources in utils directory

[gangliao]

Currently, paddle/utils includes miscellaneous, irrelevant source code, which should be deleted or moved to other places.

For instance, dependency relationships:

[utils <- cuda], [cuda <- utils]
initMain() in utils dir depends on hl_start() in cuda dir, and vice versa .

After discussing with @reyoung @wangkuiyi, we reached a preliminary consensus to revise sources.

• ├── BarrierStat.cpp
• ├── BarrierStat.h
• ├── CMakeLists.txt
• ├── ClassRegistrar.h
• ├── CommandLineParser.cpp Remove utils/CommandLineParser.h #989 @gangliao
• ├── CommandLineParser.h Remove utils/CommandLineParser.h #989 @gangliao
• ├── CpuId.cpp runtime check flags for AVX @gangliao
• ├── CpuId.h @gangliao
• ├── CustomStackTrace.cpp
• ├── CustomStackTrace.h
• ├── DisableCopy.h Add common.h and remove DisableCopy and TypeDefs #994 move into common.h @gangliao
• ├── Excepts.cpp mac_os_x Move Execepts into arch/osx dir #1075 @gangliao
• ├── Excepts.h @gangliao
• ├── Flags.cpp Remove all global variables in Paddle #852 @reyoung
• ├── Flags.h @reyoung all global flags definitions, need to be removed.
• ├── GlobalConstants.cpp we do new API implementation. PassType -> Trainer.h,
• ├── GlobalConstants.h ParameterType -> Parameter.h
• ├── Locks.h some locks can be removed.
• ├── Logging.cpp use gflags.h, Keep debug logging level
• ├── Logging.h
• ├── PythonUtil.cpp /paddle/python
• ├── PythonUtil.h
• ├── Queue.h ThreadSafeQueue.h
• ├── Stat.cpp move registerTimer to paddle/stats
• ├── Stat.h
• ├── StringUtil.cpp
• ├── StringUtil.h
• ├── Thread.h delete if not necessary
• ├── ThreadLocal.cpp seems necessary, how about c++11 thread library?
• ├── ThreadLocal.h
• ├── TypeDefs.h FloatType.h Add common.h and remove DisableCopy and TypeDefs #994 move into common.h @gangliao
• ├── Util.cpp
• ├── Util.h split into several pieces
• ├── Version.cpp delete or split
• ├── Version.h
  ├── arch
  │ ├── linux
  │ │ └── Locks.cpp
  │ └── osx
  │ └── Locks.cpp
  ├── enable_virtualenv.c
  ├── enable_virtualenv.py
  └── tests

[wangkuiyi]

Good to see this issue! Are we going to create some sub-tasks and assign them to our team members? Thansk! @gangliao

[gangliao]

@wangkuiyi
Firstly, I will do a typical sub-task fully based on our c++ style, discussing with our colleagues who want to involve and contribute.

The continued follow-up development works and even the future C API will benefit a lot from this start point.

Thanks a lot.

[gangliao]

For DisableCopy.h, it might be moved into common.h