wmaker: Created a global structure to regroup all global variables

Having all the global variables at the same place will provide
better visibility on the code; grouping them in a structure
reduces the risk for name clash; it also offer the possibility
to organise them.

Another BIG benefit is that, when reading the code, an access to
a global variable will now be clearly visible, and distinguished
from a local variable use.

src/main.c

@@ -64,6 +64,7 @@
 #endif
 
 /****** Global Variables ******/
+struct wmaker_global_variables w_global;
 
 /* general info */
 
@@ -145,8 +146,6 @@ int wXkbEventBase;
 #endif
 
 /* special flags */
-wprog_state WProgramSigState = 0;
-wprog_state WProgramState = WSTATE_NORMAL;
 char WDelayedActionSet = 0;
 
 /* notifications */
@@ -596,6 +595,10 @@ int main(int argc, char **argv)
 	int i_am_the_monitor, i, len;
 	char *str, *alt;
 
+	memset(&w_global, 0, sizeof(w_global));
+	w_global.program.state = WSTATE_NORMAL;
+	w_global.program.signal_state = WSTATE_NORMAL;
+
 	/* setup common stuff for the monitor and wmaker itself */
 	WMInitializeApplication("WindowMaker", &argc, argv);