Minor, add debug logs and clarify comment

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>

src/exec.c

@@ -59,11 +59,11 @@ int complete(char *cmd, int pid)
 
 	if (waitpid(pid, &status, 0) == -1) {
 		if (errno == EINTR)
-			errx(1, "Caught unblocked signal waiting for %s, aborting", cmd);
+			warnx("Caught unblocked signal waiting for %s, aborting", cmd);
 		else if (errno == ECHILD)
-			errx(1, "Caught SIGCHLD waiting for %s, aborting", cmd);
+			warnx("Caught SIGCHLD waiting for %s, aborting", cmd);
 		else
-			errx(1, "Failed starting %s, error %d: %s", cmd, errno, strerror (errno));
+			warnx("Failed starting %s, error %d: %s", cmd, errno, strerror(errno));
 
 		return -1;
 	}
@@ -186,7 +186,7 @@ int run(char *cmd, char *log)
 	} else if (WIFSIGNALED(status)) {
 		dbg("Process '%s' terminated by signal %d", cmd, WTERMSIG(status));
 		if (!result)
-			result = 1; /* Must alert callee that the command did complete successfully.
+			result = 1; /* Must alert callee the command did not complete successfully.
 				     * This is necessary since not all programs trap signals and
 				     * change their return code accordingly. --Jocke */
 	}

src/service.c

@@ -652,6 +652,7 @@ static int service_start(svc_t *svc)
 		goto fail;
 	}
 	if (pid > 1) {
+		dbg("Starting %s as PID %d", svc_ident(svc, NULL, 0), pid);
 		svc->pid = pid;
 		svc->start_time = jiffies();
 	} else if (pid == 0) {