/**
* Returns a longer message describing an error name.
* If the error name is unknown, returns the name
/**
* Returns a longer message describing an error name.
* If the error name is unknown, returns the name
* must ensure the name and message are global data that won't be
* freed. You probably want dbus_set_error() instead, in most cases.
*
* must ensure the name and message are global data that won't be
* freed. You probably want dbus_set_error() instead, in most cases.
*