criu: enable soccr logging

Initialize logging function and log_level for libsoccr.
Otherwise all soccr messages are skipped.

travis-ci: success for libsoccr debug/info messages
Reported-by: Adrian Reber <adrian@lisas.de>
Signed-off-by: Dmitry Safonov <dsafonov@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

criu/crtools.c

@@ -53,6 +53,8 @@
 #include "setproctitle.h"
 #include "sysctl.h"
 
+#include "../soccr/soccr.h"
+
 struct cr_options opts;
 
 void init_opts(void)
@@ -686,6 +688,7 @@ int main(int argc, char *argv[], char *envp[])
 
 	if (log_init(opts.output))
 		return 1;
+	libsoccr_set_log(log_level, print_on_level);
 
 	pr_debug("Version: %s (gitid %s)\n", CRIU_VERSION, CRIU_GITID);
 	if (opts.deprecated_ok)