added region check step, route53 config.

fix docker build

I am getting following error without this commit when doing docker build.

  File "<string>", line 1, in <module>
  File "/usr/local/lib/python2.7/dist-packages/setuptools/__init__.py", line 12, in <module>
    import setuptools.version
  File "/usr/local/lib/python2.7/dist-packages/setuptools/version.py", line 1, in <module>
    import pkg_resources
  File "/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 70, in <module>
    import packaging.version
ImportError: No module named packaging.version

No idea why this change fix the problem, but it does fix.

paddle on aws with kubernetes tutorial now works

Fix destroy error in test_ProtoServer.

add python v2 package

Padding Operation

fix bug: update function can not be inherited by subclass, otherwise BUG comes.

Add some comment of CrossMapNormalFunc

Fix issue #1186

Set protobuf CMAKE_INSTALL_LIBDIR to fixed value lib

Make external/glog use local gflags.

Fix case-sensitiveness

Correct Handle Python Proto2

detect redhat and unknown in CMake

Feature/error handling in paddle

Compile glog with WITH_GFLAGS=ON

Also initialize glog after gflags in Util.cpp initMain()

Change-Id: I09ff062b462aa76d9f7b5f97e883b92939e6dcb2

Bug fix in GatedRecurrentLayer which only occurs in predicting or testing.