Split out GAMMU-related code from library into daemon.

Add proper optional support for GAMMU via build-time options.
This commit fixes #4, but some additional checks maybe needed.

daemon/yasnd.c

@@ -1,3 +1,4 @@
+#include "config.h"
 #include <sys/stat.h>
 #include <fcntl.h>
 #include <errno.h>
@@ -152,9 +153,11 @@ void init()
 		hosts[i].alert_sent=false;
 		hosts[i].reaction_obtained=false;
 	}
+#ifdef HAVE_LIBGAMMU
 	// initialize gammu structures
 	if (sms_enable)
 		gammu_init();
+#endif
 	// initialize LPT control circuit
 	lpt_init();
 	// initialize server socket
@@ -281,8 +284,10 @@ void signal_handler(int signum)
 		ipc_free();
 		// free config structure
 		cfg_free(cfg);
+#ifdef HAVE_LIBGAMMU
 		// free gammu structure
 		gammu_free();
+#endif
 		// free hosts structures memory
 		if (hosts!=NULL)
 			free(hosts);