新增Win7离线构建并调整PDF采购章及供需方签章位置

packaging/win7/01_install_env.cmd

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+@echo off
+setlocal EnableExtensions DisableDelayedExpansion
+cd /d "%~dp0"
+set "PYTHONUTF8=1"
+set "PYTHONIOENCODING=utf-8"
+set "PYTHONHOME="
+set "PYTHONPATH="
+set "PO_PYTHON=%~dp0.python38\python.exe"
+set "PO_INSTALLER=%~dp0installers\python-3.8.10.exe"
+if /i "%PROCESSOR_ARCHITECTURE%"=="AMD64" set "PO_INSTALLER=%~dp0installers\python-3.8.10-amd64.exe"
+if /i "%PROCESSOR_ARCHITEW6432%"=="AMD64" set "PO_INSTALLER=%~dp0installers\python-3.8.10-amd64.exe"
+if exist "%PO_PYTHON%" goto ready
+echo Installing the bundled Python 3.8.10. Windows 7 SP1 is required.
+echo If Windows requests a restart, restart and run this script again.
+start /wait "" "%PO_INSTALLER%" /passive InstallAllUsers=0 TargetDir="%~dp0.python38" Include_launcher=0 InstallLauncherAllUsers=0 PrependPath=0 Include_doc=0 Include_test=0 Include_tcltk=0 Shortcuts=0 AssociateFiles=0
+if errorlevel 1 goto failed
+:ready
+if not exist "%PO_PYTHON%" goto failed
+"%PO_PYTHON%" "%~dp0win7\build.py" setup
+if errorlevel 1 goto failed
+echo.
+echo Setup passed. Run 02_build_exe.cmd next.
+pause
+exit /b 0
+:failed
+echo.
+echo SETUP FAILED. See README_WIN7.txt and the message above.
+echo Do not install the modern Python 3.11 build on Windows 7.
+pause
+exit /b 1