windows下：
删除文件夹里的 .svn，
cmd 进入相应目录 运行 for /r ./ %a in (./) do @if exist "%a/.svn" rd /s /q "%a/.svn"
或 bat
@echo On
@Rem 删除SVN版本控制目录
@PROMPT [Com]
@for /r . %%a in (.) do @if exist "%%a/.svn" rd /s /q "%%a/.svn"
@Rem for /r . %%a in (.) do @if exist "%%a/.svn" @echo "%%a/.svn"
@echo Mission Completed.
@pause