Added build script to automate generating, building and installing OCV for…

Added build script to automate generating, building and installing OCV for WinRT, WindowsPhone 8, WindowsPhone 8.1. Added readme and .bat script wrapper. Added standalone script to build and install pre-generated projects.
Signed-off-by: Maxim Kostin <v-maxkos@microsoft.com>

platforms/winrt/build_all.bat

+@echo off
+
+
+set FOUND_VC=0
+
+if defined VS120COMNTOOLS (
+    set VSTOOLS="%VS120COMNTOOLS%"
+    set VC_VER=120
+    set FOUND_VC=1
+) 
+
+set VSTOOLS=%VSTOOLS:"=%
+set "VSTOOLS=%VSTOOLS:\=/%"
+
+set VSVARS="%VSTOOLS%vsvars32.bat"
+
+if not defined VSVARS (
+    echo Can't find VC2013 installed!
+    goto ERROR
+)
+
+
+echo./*
+echo. * Building OpenCV
+echo. */
+echo.
+
+
+call %VSVARS%
+
+if %FOUND_VC%==1 (
+	call:DoMSBuild ..\..\bin\WP\8.1\x86\OpenCV.sln Debug
+	call:DoMSBuild ..\..\bin\WP\8.1\x86\INSTALL.vcxproj Debug
+	call:DoMSBuild ..\..\bin\WP\8.1\x86\OpenCV.sln Release
+	call:DoMSBuild ..\..\bin\WP\8.1\x86\INSTALL.vcxproj Release
+
+	call:DoMSBuild ..\..\bin\WP\8.1\ARM\OpenCV.sln Debug
+	call:DoMSBuild ..\..\bin\WP\8.1\ARM\INSTALL.vcxproj Debug
+	call:DoMSBuild ..\..\bin\WP\8.1\ARM\OpenCV.sln Release
+	call:DoMSBuild ..\..\bin\WP\8.1\ARM\INSTALL.vcxproj Release
+
+	call:DoMSBuild ..\..\bin\WS\8.1\x86\OpenCV.sln Debug
+	call:DoMSBuild ..\..\bin\WS\8.1\x86\INSTALL.vcxproj Debug
+	call:DoMSBuild ..\..\bin\WS\8.1\x86\OpenCV.sln Release
+	call:DoMSBuild ..\..\bin\WS\8.1\x86\INSTALL.vcxproj Release
+
+	call:DoMSBuild ..\..\bin\WS\8.1\ARM\OpenCV.sln Debug
+	call:DoMSBuild ..\..\bin\WS\8.1\ARM\INSTALL.vcxproj Debug
+	call:DoMSBuild ..\..\bin\WS\8.1\ARM\OpenCV.sln Release
+	call:DoMSBuild ..\..\bin\WS\8.1\ARM\INSTALL.vcxproj Release
+
+	call:DoMSBuild ..\..\bin\WP\8.0\x86\OpenCV.sln Debug
+	call:DoMSBuild ..\..\bin\WP\8.0\x86\INSTALL.vcxproj Debug
+	call:DoMSBuild ..\..\bin\WP\8.0\x86\OpenCV.sln Release
+	call:DoMSBuild ..\..\bin\WP\8.0\x86\INSTALL.vcxproj Release
+
+	call:DoMSBuild ..\..\bin\WP\8.0\ARM\OpenCV.sln Debug
+	call:DoMSBuild ..\..\bin\WP\8.0\ARM\INSTALL.vcxproj Debug
+	call:DoMSBuild ..\..\bin\WP\8.0\ARM\OpenCV.sln Release
+	call:DoMSBuild ..\..\bin\WP\8.0\ARM\INSTALL.vcxproj Release
+
+	call:DoMSBuild ..\..\bin\WS\8.0\x86\OpenCV.sln Debug
+	call:DoMSBuild ..\..\bin\WS\8.0\x86\INSTALL.vcxproj Debug
+	call:DoMSBuild ..\..\bin\WS\8.0\x86\OpenCV.sln Release
+	call:DoMSBuild ..\..\bin\WS\8.0\x86\INSTALL.vcxproj Release
+
+	call:DoMSBuild ..\..\bin\WS\8.0\ARM\OpenCV.sln Debug
+	call:DoMSBuild ..\..\bin\WS\8.0\ARM\INSTALL.vcxproj Debug
+	call:DoMSBuild ..\..\bin\WS\8.0\ARM\OpenCV.sln Release
+	call:DoMSBuild ..\..\bin\WS\8.0\ARM\INSTALL.vcxproj Release
+)
+
+echo.&goto:EOF
+
+
+::--------------------------------------------------------
+::-- DoMSBuild
+::--------------------------------------------------------
+:DoMSBuild
+msbuild %~1 /p:Configuration="%~2" /m
+@if errorlevel 1 goto :ERROR
+goto:EOF
+
+:ERROR
+pause
+:EOF
\ No newline at end of file

platforms/winrt/readme.txt

+Building OpenCV from Source, using CMake and Command Line
+=========================================================
+
+Requirements
+============
+CMake 3.1.0 or higher
+Windows Phone/Store 8.1 Visual Studio 2013
+Windows Phone/Store 8.0 Visual Studio 2012 
+
+For example, to be able to build all Windows Phone and Windows Store projects install the following:
+
+Install Visual Studio 2013 Community Edition
+	http://go.microsoft.com/?linkid=9863608
+
+Install Visual Studio Express 2012 for Windows Desktop 
+	http://www.microsoft.com/en-us/download/details.aspx?id=34673
+
+
+
+To create all Windows Phone (8.0, 8.1) and Windows Store (8.0, 8.1) Visual Studio projects
+==========================================================================================
+cd opencv/platforms/winrt
+setup_winrt.bat "WP,WS" "8.0,8.1" "x86,ARM"
+
+If everything's fine, a few minutes later you will get the following output in the opencv/bin directory:
+
+bin 
+    WP 
+        8.0 
+            ARM
+            x86 
+        8.1
+            ARM
+            x86
+    WS
+        8.0
+            ARM
+            x86
+        8.1
+            ARM
+            x86		
+
+Build the OpenCV.sln for the particular platform you are targeting. Due to the current limitations of CMake, separate x86/x64/ARM projects must be generated for each platform.
+
+You can also target a single specific configuration
+    setup_winrt.bat "WP" "8.1" "x86"
+
+Or a subset of configurations
+    setup_winrt.bat "WP,WS" "8.1" "x86"
+
+To display the command line options for setup_winrt.bat 
+	setup_winrt.bat -h
+
+Note that x64 CMake generation support is as follows:
+------------------------------
+Platform\Version | 8.0 | 8.1 |
+-----------------|-----|-----|
+Windows Phone    | No  | No  |
+Windows Store    | Yes | Yes |
+
+Note: setup_winrt.bat calls the unsigned PowerShell script with the -ExecutionPolicy Unrestricted option.
+
+
+CMake command line options for Windows Phone and Store
+======================================================
+
+cmake [options] <path-to-source>
+
+Windows Phone 8.1 x86
+cmake -G "Visual Studio 12 2013" -DCMAKE_SYSTEM_NAME=WindowsPhone -DCMAKE_SYSTEM_VERSION=8.1 <path-to-source>
+
+Windows Phone 8.1 ARM
+cmake -G "Visual Studio 12 2013 ARM" -DCMAKE_SYSTEM_NAME=WindowsPhone -DCMAKE_SYSTEM_VERSION=8.1 <path-to-source>
+
+Windows Store 8.1 x86
+cmake -G "Visual Studio 12 2013" -DCMAKE_SYSTEM_NAME=WindowsStore -DCMAKE_SYSTEM_VERSION=8.1 <path-to-source>
+
+Windows Store 8.1 ARM
+cmake -G "Visual Studio 12 2013 ARM" -DCMAKE_SYSTEM_NAME=WindowsStore -DCMAKE_SYSTEM_VERSION=8.1 <path-to-source>
+
+Note: For Windows 8.0 Phone and Store you can specify either Visual Studio 11 2012 or Visual Studio 12 2013 as the generator
+
+Windows Phone 8.0 x86
+cmake -G "Visual Studio 12 2013" -DCMAKE_SYSTEM_NAME=WindowsPhone -DCMAKE_SYSTEM_VERSION=8.0 <path-to-source>
+
+Windows Phone 8.0 ARM
+cmake -G "Visual Studio 12 2013 ARM" -DCMAKE_SYSTEM_NAME=WindowsPhone -DCMAKE_SYSTEM_VERSION=8.0 <path-to-source>
+
+Windows Store 8.0 x86
+cmake -G "Visual Studio 12 2013" -DCMAKE_SYSTEM_NAME=WindowsStore -DCMAKE_SYSTEM_VERSION=8.0 <path-to-source>
+
+Windows Store 8.0 ARM
+cmake -G "Visual Studio 12 2013 ARM" -DCMAKE_SYSTEM_NAME=WindowsStore -DCMAKE_SYSTEM_VERSION=8.0 <path-to-source>
+
+Example
+=======
+
+To generate Windows Phone 8.1 x86 project files in the opencv/bin dir
+
+mkdir bin
+cd bin
+cmake -G "Visual Studio 12 2013" -DCMAKE_SYSTEM_NAME=WindowsPhone -DCMAKE_SYSTEM_VERSION=8.1 ../
+

platforms/winrt/setup_winrt.bat

+@echo off
+Powershell.exe -ExecutionPolicy Unrestricted -File setup_winrt.ps1 %*