test0修改为test1，给test0生成patch文件
diff -uN test0 test1 > test1.patch
给test0打patch文件，升级为test1
patch -R test0 < test1.patch
生成MergeRegionInputFormat对svn修改的patch文件
svn diff MergeRegionInputFormat.java > testpath
给MergeRegionInputFormat打patch文件，升级为最新patch版
svn patch MergeRegionInputFormat < testpath
