build: implemented build shell-script for Windows

build.bat

@@ -0,0 +1,25 @@
+@echo off
+
+SET ORG_PATH=github.com\coreos
+SET REPO_PATH=%ORG_PATH%\etcd
+
+SET GOPATH=%cd%\gopath
+
+:: Cleanup old builds
+IF EXIST "%GOPATH%\src\%REPO_PATH%" rmdir /s /q "%GOPATH%\src\%REPO_PATH%"
+IF EXIST "%GOPATH%\src\%ORG_PATH%" rmdir /s /q "%GOPATH%\src\%ORG_PATH%"
+IF EXIST "%cd%\bin" rmdir /s /q "%cd%\bin"
+
+md "%GOPATH%\src\%ORG_PATH%"
+
+mklink /d "%GOPATH%\src\%REPO_PATH%" "%cd%"
+FOR /f "usebackq tokens=*" %%a IN (`go env`) DO %%a
+
+(FOR /f "tokens=*" %%i IN ('git rev-parse --short HEAD') DO SET GIT_SHA=%%i) 2>NUL
+IF NOT DEFINED GIT_SHA SET GIT_SHA=GitNotFound
+
+:: Static compilation is useful when etcd is run in a container
+SET CGO_ENABLED=0
+go build -a -installsuffix cgo -ldflags "-s -X %REPO_PATH%\version.GitSHA %GIT_SHA%" -o bin\etcd.exe "%REPO_PATH%"
+:: TODO: Get the %GIT_SHA% argument to work. Useful for `etcd --version` style commands.
+go build -a -installsuffix cgo -ldflags "-s" -o bin\etcdctl.exe "%REPO_PATH%\etcdctl"