make sure we don't have namespace clashes between libraries and apps

* All loging prefixes in libraries should be DL like DLINP
* All signals / subsystems should be called S_L_* SS_L_*
* All command nodes should be called L_*_NODE

This makes sure existinc code still compiles as expected

include/osmocom/core/logging.h

@@ -39,12 +39,12 @@ void logp(int subsys, char *file, int line, int cont, const char *format, ...) _
 /* logging levels defined by the library itself */
 #define DLGLOBAL	-1
 #define DLLAPDM		-2
-#define DINP		-3
-#define DMUX		-4
-#define DMI		-5
-#define DMIB		-6
-#define DRSL		-7
-#define DNM		-8
+#define DLINP		-3
+#define DLMUX		-4
+#define DLMI		-5
+#define DLMIB		-6
+#define DLRSL		-7
+#define DLNM		-8
 #define OSMO_NUM_DLIB	9
 
 struct log_category {

include/osmocom/core/signal.h

@@ -11,8 +11,8 @@
 
 /* signal subsystems. */
 enum {
-	SS_GLOBAL		= OSMO_SIGNAL_SS_RESERVED,
-	SS_INPUT,
+	SS_L_GLOBAL		= OSMO_SIGNAL_SS_RESERVED,
+	SS_L_INPUT,
 };
 
 /* application-defined signal types. */
@@ -21,7 +21,7 @@ enum {
 
 /* signal types. */
 enum {
-	S_GLOBAL_SHUTDOWN	= OSMO_SIGNAL_T_RESERVED,
+	S_L_GLOBAL_SHUTDOWN	= OSMO_SIGNAL_T_RESERVED,
 };
 
 typedef int osmo_signal_cbfn(unsigned int subsys, unsigned int signal, void *handler_data, void *signal_data);

include/osmocom/vty/command.h

@@ -74,8 +74,8 @@ enum node_type {
 
 	VTY_NODE,		/* Vty node. */
 
-	E1INP_NODE,		/* E1 line in libosmo-abis. */
-	IPA_NODE,		/* IPA proxying commands in libosmo-abis. */
+	L_E1INP_NODE,		/* E1 line in libosmo-abis. */
+	L_IPA_NODE,		/* IPA proxying commands in libosmo-abis. */
 
 	_LAST_OSMOVTY_NODE
 };

src/logging.c

@@ -72,35 +72,35 @@ static const struct log_info_cat internal_cat[OSMO_NUM_DLIB] = {
 		.loglevel = LOGL_NOTICE,
 		.enabled = 1,
 	},
-	[INT2IDX(DINP)] = {
+	[INT2IDX(DLINP)] = {
 		.name = "DINP",
 		.description = "A-bis Intput Subsystem",
 		.loglevel = LOGL_NOTICE,
 		.enabled = 1,
 	},
-	[INT2IDX(DMUX)] = {
+	[INT2IDX(DLMUX)] = {
 		.name = "DMUX",
 		.description = "A-bis B-Subchannel TRAU Frame Multiplex",
 		.loglevel = LOGL_NOTICE,
 		.enabled = 1,
 	},
-	[INT2IDX(DMI)] = {
+	[INT2IDX(DLMI)] = {
 		.name = "DMI",
 		.description = "A-bis Input Driver for Signalling",
 		.enabled = 0, .loglevel = LOGL_NOTICE,
 	},
-	[INT2IDX(DMIB)] = {
+	[INT2IDX(DLMIB)] = {
 		.name = "DMIB",
 		.description = "A-bis Input Driver for B-Channels (voice)",
 		.enabled = 0, .loglevel = LOGL_NOTICE,
 	},
-	[INT2IDX(DRSL)] = {
+	[INT2IDX(DLRSL)] = {
 		.name = "DRSL",
 		.description = "A-bis Radio Siganlling Link (RSL)",
 		.color = "\033[1;35m",
 		.enabled = 1, .loglevel = LOGL_NOTICE,
 	},
-	[INT2IDX(DNM)] = {
+	[INT2IDX(DLNM)] = {
 		.name = "DNM",
 		.description = "A-bis Network Management / O&M (NM/OML)",
 		.color = "\033[1;36m",