Also rename 'struct manifest_info'.

The previous commit renamed the struct's typedef, but not the struct
name itself.

src/include/replication/backup_manifest.h

@@ -24,7 +24,7 @@ typedef enum manifest_option
 	MANIFEST_OPTION_FORCE_ENCODE
 } backup_manifest_option;
 
-typedef struct manifest_info
+typedef struct backup_manifest_info
 {
 	BufFile    *buffile;
 	pg_checksum_type checksum_type;

src/include/replication/basebackup.h

@@ -14,7 +14,7 @@
 
 #include "nodes/replnodes.h"
 
-struct manifest_info;			/* avoid including backup_manifest.h */
+struct backup_manifest_info;	/* avoid including backup_manifest.h */
 
 
 /*
@@ -34,6 +34,6 @@ typedef struct
 extern void SendBaseBackup(BaseBackupCmd *cmd);
 
 extern int64 sendTablespace(char *path, char *oid, bool sizeonly,
-							struct manifest_info *manifest);
+							struct backup_manifest_info *manifest);
 
 #endif							/* _BASEBACKUP_H */