filename will be read in at startup to create an initial set of cookies. If
read_only is false, then the non-session cookies will be written to
filename when the signalCookieJar::changed signal is emitted from the
jar. (If read_only is true, then the cookie jar will only be used for this
session, and changes made to it will be lost when the jar is destroyed.)
Creates a #SoupCookieJarDB.
filename will be read in at startup to create an initial set of cookies. If read_only is false, then the non-session cookies will be written to filename when the signalCookieJar::changed signal is emitted from the jar. (If read_only is true, then the cookie jar will only be used for this session, and changes made to it will be lost when the jar is destroyed.)