用到的插件直接copy到/eclipse/features和/eclipse/plugins目录下，这种比较野蛮的“侵入式安装”不便于升级eclipse，又不能使多个eclipse共享插件，而“非侵入式安装---link插件安装方式”则避免了以上缺点,且灵活多变
1.create folder "myPlugin/SVN" under "Genuitec" folder,download svn_for_eclipse plugin,and extract "features" and "plugins" to folder "myPlugin/SVN"
2.create file svn.link in folder "dropins".
svn.link's contend like this: path=D:/Genuitec/myPlugin/SVN
note that "/" not "\"
3.restart eclipse, we can find svn plugin under "window->preferences->Team"
other plugins should be installed like this.