Clean up th ecompile process by centralizing the include files

- code compile tested, but due to a yet unresolved problem with
          parse.h's creation, compile not completed...

src/include/optimizer/paths.h

@@ -0,0 +1,89 @@
+/*-------------------------------------------------------------------------
+ *
+ * paths.h--
+ *    prototypes for various files in optimizer/paths (were separate
+ *    header files
+ *
+ *
+ * Copyright (c) 1994, Regents of the University of California
+ *
+ * $Id: paths.h,v 1.1 1996/08/28 07:23:19 scrappy Exp $
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef	PATHS_H
+#define	PATHS_H
+
+/*
+ * allpaths.h
+ */
+extern List *find_paths(Query *root, List *rels);
+
+/*
+ * indxpath.h
+ *    routines to generate index paths
+ */
+extern List *find_index_paths(Query *root, Rel *rel, List *indices,
+			      List *clauseinfo_list, 
+			      List *joininfo_list);
+
+/*
+ * joinpath.h
+ *     routines to create join paths
+ */
+extern void find_all_join_paths(Query *root, List *joinrels);
+				
+
+/*
+ * orindxpath.h
+ */
+extern List *create_or_index_paths(Query *root, Rel *rel, List *clauses);
+
+/*
+ * hashutils.h
+ *    routines to deal with hash keys and clauses
+ */
+extern List *group_clauses_by_hashop(List *clauseinfo_list,
+				     int inner_relid);
+
+/*
+ * joinutils.h
+ *    generic join method key/clause routines
+ */
+extern List *match_pathkeys_joinkeys(List *pathkeys,
+		 List *joinkeys, List *joinclauses, int which_subkey,
+		 List **matchedJoinClausesPtr);		     
+extern List *extract_path_keys(List *joinkeys, List *tlist,
+		 int which_subkey);
+extern Path *match_paths_joinkeys(List *joinkeys, PathOrder *ordering,
+		 List *paths, int which_subkey);
+extern List *new_join_pathkeys(List *outer_pathkeys,
+		 List *join_rel_tlist, List *joinclauses);
+
+/*
+ * mergeutils.h
+ *    routines to deal with merge keys and clauses
+ */
+extern List *group_clauses_by_order(List *clauseinfo_list,
+				    int inner_relid);
+extern MInfo *match_order_mergeinfo(PathOrder *ordering,
+				    List *mergeinfo_list);
+
+/*
+ * joinrels.h
+ *    routines to determine which relations to join
+ */
+extern List *find_join_rels(Query *root, List *outer_rels);
+extern void add_new_joininfos(Query *root, List *joinrels, List *outerrels);
+extern List *final_join_rels(List *join_rel_list);
+
+/*
+ * prototypes for path/prune.c
+ */
+extern List *prune_joinrels(List *rel_list);
+extern void prune_rel_paths(List *rel_list);
+extern Path *prune_rel_path(Rel *rel, Path *unorderedpath);
+extern List *merge_joinrels(List *rel_list1, List *rel_list2);
+extern List *prune_oldrels(List *old_rels);
+
+#endif	/* PATHS_H */