fontlose的专栏

<br />主要用strrchr函数时，从类型‘const char*’到类型‘char*’的转换无效，新版本g++不支持报错了。<br /><br /> 错误1：<br />      backend/vobject.cpp: In function ‘VObject* addGroup(VObject*, const char*)’:<br />      backend/vobject.cpp:419: error: invalid conversion from ‘const char*’ t