Use a string pool to reduce the memory footprint

git-svn-id: svn://svn.cc65.org/cc65/trunk@2197 b7a2c559-68d2-44c3-8de9-860c34a00d81

src/ld65/dbgsyms.h

@@ -63,7 +63,7 @@ struct DbgSym {
     ObjData*   		Obj;	    	/* Object file that exports the name */
     FilePos    		Pos;		/* File position of definition */
     ExprNode*  		Expr;		/* Expression (0 if not def'd) */
-    const char*        	Name;  	       	/* Name */
+    unsigned            Name;  	       	/* Name */
     unsigned char	Type;		/* Type of symbol */
 };
 
@@ -92,5 +92,3 @@ void PrintDbgSymLabels (ObjData* O, FILE* F);
 
 
 
-
-