修改日志时遇到以下错误：
Repository has not been enabled to accept revision propchanges;
ask the administrator to create a pre-revprop-change hook
解决办法如下：
同一，在某个库的属性页面的Hooks选项卡下找到Pre-revision property change hook，双击修改其内容。
SET REPOS="%1" SET REV="%2" SET USER="%3" SET PROPNAME="%4" SET ACTION="%5" IF %ACTION% == "M" (IF %PROPNAME% == "svn:log" (EXIT 0)) ECHO "Changing revision properties %PROPNAME% is prohibited" >&2 EXIT 1
应用就可以了。
