core: more control on mem usage printing

- mem_summary value controls separately printing pkg and shm status
	- 0 - disabled
	- 1 - pkg status
	- 2 - shm status
	- 4 - pkg summary
	- 8 - shm summary
- default is 3 - pkg/shm status
- the value can be updated via rpc, making easier to troubleshoot
  separately shm or pkg

cfg_core.c

@@ -115,7 +115,8 @@ struct cfg_group_core default_core_cfg = {
 	0, /*!< udp_mtu_try_proto -> default disabled */
 	0,  /*!< force_rport */
 	L_DBG, /*!< memlog */
-	1 /*!< mem_summary -flags: 0 off, 1 shm/pkg_status, 2 shm/pkg_sums */
+	3 /*!< mem_summary -flags: 0 off, 1 pkg_status, 2 shm_status,
+		4 pkg_sums, 8 shm_sums */
 };
 
 void	*core_cfg = &default_core_cfg;
@@ -233,7 +234,7 @@ cfg_def_t core_cfg_def[] = {
 		"force rport for all the received messages" },
 	{"memlog",		CFG_VAR_INT|CFG_ATOMIC,	0, 0, 0, 0,
 		"log level for memory status/summary information"},
-	{"mem_summary",	CFG_VAR_INT|CFG_ATOMIC,	0, 3, 0, 0,
+	{"mem_summary",	CFG_VAR_INT|CFG_ATOMIC,	0, 15, 0, 0,
 		"memory debugging information displayed on exit (flags): "
 		" 0 - off, 1 - dump all the used blocks (status),"
 		" 2 - summary of used blocks" },

main.c

@@ -554,7 +554,7 @@ void cleanup(show_status)
 			LOG(memlog, "Memory status (pkg):\n");
 			pkg_status();
 		}
-		if (cfg_get(core, core_cfg, mem_summary) & 2) {
+		if (cfg_get(core, core_cfg, mem_summary) & 4) {
 			LOG(memlog, "Memory still-in-use summary (pkg):\n");
 			pkg_sums();
 		}
@@ -564,11 +564,11 @@ void cleanup(show_status)
 	if (pt) shm_free(pt);
 	pt=0;
 	if (show_status && memlog <= cfg_get(core, core_cfg, debug)){
-		if (cfg_get(core, core_cfg, mem_summary) & 1) {
+		if (cfg_get(core, core_cfg, mem_summary) & 2) {
 			LOG(memlog, "Memory status (shm):\n");
 			shm_status();
 		}
-		if (cfg_get(core, core_cfg, mem_summary) & 2) {
+		if (cfg_get(core, core_cfg, mem_summary) & 8) {
 			LOG(memlog, "Memory still-in-use summary (shm):\n");
 			shm_sums();
 		}