rev-list: make "struct rev_list_info" static to the only user

The structure has nothing to do with what "git bisect" does; as
nobody other than "git rev-list" implementation uses it, move it
as a private data type to builtin/rev-list.c

Signed-off-by: Junio C Hamano <gitster@pobox.com>

Author: gitster

bisect.h

@@ -27,14 +27,6 @@ struct commit_list *filter_skipped(struct commit_list *list,
 #define FIND_BISECTION_ALL			(1u<<0)
 #define FIND_BISECTION_FIRST_PARENT_ONLY	(1u<<1)
 
-struct rev_list_info {
-	struct rev_info *revs;
-	int flags;
-	int show_timestamp;
-	int hdr_termination;
-	const char *header_prefix;
-};
-
 /*
  * enum bisect_error represents the following return codes:
  * BISECT_OK: success code. Internally, it means that next

builtin/rev-list.c

@@ -28,6 +28,14 @@
 #include "quote.h"
 #include "strbuf.h"
 
+struct rev_list_info {
+	struct rev_info *revs;
+	int flags;
+	int show_timestamp;
+	int hdr_termination;
+	const char *header_prefix;
+};
+
 static const char rev_list_usage[] =
 "git rev-list [<options>] <commit>... [--] [<path>...]\n"
 "\n"