Script to set systemwide user path for Windows

New script adds the binary locations required for GIN to the user's
run path.
Release script adds set-global.bat script to Windows bundles.

Author: achilleas-k

dorelease.py

@@ -446,6 +446,7 @@ def winbundle(binfile, git_pkg, annex_pkg):
         shutil.copy(binfile, bindir)
         shutil.copy("README.md", pkgroot)
         shutil.copy(os.path.join("scripts", "gin-shell.bat"), pkgroot)
+        shutil.copy(os.path.join("scripts", "set-global.bat"), pkgroot)
 
         gitdir = os.path.join(pkgroot, "git")
         os.makedirs(gitdir)

scripts/set-global.bat

@@ -0,0 +1,16 @@
+:: GIN client global setup for Windows
+:: 
+:: This file should be part of the gin client Windows bundle. The purpose of
+:: the file is to permanently change the user path environment to be able to
+:: run GIN commands from the command line (cmd and PowerShell).
+
+echo off
+
+set curdir=%~dp0
+
+echo Adding %curdir% to path
+set ginbinpath=%curdir%\bin
+set gitpaths=%curdir%\git\usr\bin;%curdir%\git\bin
+echo %path%|find /I "%curdir%">nul || setx path "%path%;%ginbinpath%;%gitpaths%"
+echo GIN CLI is ready
+pause