Do not resolve the lists of spans for LineInfos and Scopes, but keep them as

ids. This way, we can delay loading spans until we know that we definitely
need an object file. 
Did some restructuring for writing of span lists to the debug info file.


git-svn-id: svn://svn.cc65.org/cc65/trunk@5261 b7a2c559-68d2-44c3-8de9-860c34a00d81

src/ld65/scopes.h

@@ -67,7 +67,7 @@ struct Scope {
     unsigned            Type;           /* Type of scope */
     unsigned            Name;           /* Name of scope */
     unsigned long       Size;           /* Size of scope */
-    Collection          Spans;          /* Spans for this scope */
+    unsigned*           Spans;          /* Spans for this scope */
 };