Caffe2 building (#47)

* Caffe2 building script with Visual Studio 2015.

* caffe2 v140 build system refactoring.

* Restore auto.bat and msbuild.bat after merging peterjc123/master.

* Changing dir before and after pytorch clone.

* Test caffe2 build

* Added dependencies for v140\auto.bat

GFlags;
GLog;
LMDB;
OpenCV.

* Change c10 exerimental ops option name

* Changing pytorch branch for azure-pipelines.yml

* Removing pytorch repo and branch from auto.bat

* Switching repo back to pytorch/master in azure-pipelines.yml.

Author: ArutyunovG

caffe2_builders/v140/auto.bat

@@ -10,8 +10,6 @@ cd %CAFFE2_ROOT%\..
 
 rem Cloning repository if it doesn't exist
 if not exist pytorch (
-    set PYTORCH_BRANCH=windows-shared-build
-    set PYTORCH_REPO=ArutyunovG
     call  %~dp0%..\..\internal\clone.bat
     cd %CAFFE2_ROOT%\..
 )

caffe2_builders/v140/msbuild.bat

@@ -12,7 +12,7 @@ if %CMAKE_GENERATOR% EQU "Visual Studio 14 2015 Win64" (
                              -DCMAKE_CXX_COMPILER=%CXX% ^
                              -DCMAKE_C_COMPILER=%CC% ^
                              -DCMAKE_LINKER=%CMAKE_LINER% ^
-                             -DINCLUDE_EXPERIMENTAL_C10_OPS=OFF ^
+                             -DBUILD_C10_EXPERIMENTAL_OPS=OFF ^
                              -DBUILD_SHARED_LIBS=ON ^
                              -DBUILD_BINARY=ON