style changes: run cppi

Run it in src/ for a start.

* src/AnnotationList.h, src/InadequacyList.h, src/Sbitset.h,
* src/closure.c, src/complain.h, src/flex-scanner.h, src/getargs.h,
* src/gram.h, src/graphviz.h, src/ielr.h, src/location.h,
* src/muscle-tab.h, src/named-ref.h, src/relation.h, src/scan-code.h,
* src/state.h, src/symtab.h, src/system.h, src/uniqstr.h:
Reindent preprocessor directives.

src/relation.h

@@ -26,7 +26,7 @@
    If GRAPH is a relation, then GRAPH[Node] is a list of adjacent
    nodes, ended with END_NODE.  */
 
-#define END_NODE ((relation_node) -1)
+# define END_NODE ((relation_node) -1)
 
 typedef size_t relation_node;
 typedef relation_node *relation_nodes;