Declared registerSIGINTHandler.
Declared registerSIGINTHandler.

GoogleCloudPlatform/gcsfuse,mbrukman/gcsfuse,BanzaiMan/gcsfuse,jacobsa/ratelimit,GoogleCloudPlatform/gcsfuse,jacobsa/timeutil,kahing/gcsfuse,BanzaiMan/gcsfuse,GoogleCloudPlatform/gcsfuse