rem: void setSubject(const QCString &s)        { s_ubject=decodeRFC1522String(s); }
add: void setSubject(const QCString &s)        { s_ubject=decodeRFC2047String(s); }
context:     void setSubject(const QCString &s)        { s_ubject=decodeRFC1522String(s); }