The options are still supported in the lxc configuration file.
However they are stored only in local variables in src/lxc/log.c,
which can be read using two new functions:
	int lxc_log_get_level(void);
	const char *lxc_log_get_file(void);

Changelog: jan 14:
 have lxc_log_init use lxc_log_set_file(), have lxc_log_set_file() take
 a const char *, and have it keep its own strdup'd copy of the filename.
Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>