Got rid of unused externs.

backup.c

@@ -21,7 +21,6 @@
 #include "rsync.h"
 
 extern int verbose;
-extern int backup_suffix_len;
 extern int backup_dir_len;
 extern unsigned int backup_dir_remainder;
 extern char backup_dir_buf[MAXPATHLEN];
@@ -32,7 +31,6 @@ extern int am_root;
 extern int preserve_devices;
 extern int preserve_specials;
 extern int preserve_links;
-extern int preserve_hard_links;
 extern int safe_symlinks;
 
 /* make a complete pathname for backup file */

clientname.c

@@ -34,7 +34,6 @@
 #include "rsync.h"
 
 static const char default_name[] = "UNKNOWN";
-extern int am_daemon;
 extern int am_server;
 
 

compat.c

@@ -29,7 +29,6 @@ int remote_protocol = 0;
 
 extern int verbose;
 extern int am_server;
-extern int am_sender;
 extern int inplace;
 extern int fuzzy_basis;
 extern int read_batch;

generator.c

@@ -27,7 +27,6 @@ extern int verbose;
 extern int dry_run;
 extern int do_xfers;
 extern int log_format_has_i;
-extern int log_format_has_o_or_i;
 extern int daemon_log_format_has_i;
 extern int am_root;
 extern int am_server;

hlink.c

@@ -20,7 +20,6 @@
 
 #include "rsync.h"
 
-extern int dry_run;
 extern int verbose;
 extern int link_dest;
 extern int make_backups;

io.c

@@ -41,7 +41,6 @@
 
 extern int bwlimit;
 extern size_t bwlimit_writemax;
-extern int verbose;
 extern int io_timeout;
 extern int allowed_lull;
 extern int am_server;

match.c

@@ -20,7 +20,6 @@
 #include "rsync.h"
 
 extern int verbose;
-extern int am_server;
 extern int do_progress;
 extern int checksum_seed;
 extern int append_mode;

receiver.c

@@ -34,16 +34,12 @@ extern int write_batch;
 extern int batch_gen_fd;
 extern int protocol_version;
 extern int relative_paths;
-extern int keep_dirlinks;
 extern int preserve_hard_links;
 extern int preserve_perms;
-extern int io_error;
 extern int basis_dir_cnt;
 extern int make_backups;
 extern int cleanup_got_literal;
 extern int remove_sent_files;
-extern int module_id;
-extern int ignore_errors;
 extern int append_mode;
 extern int sparse_files;
 extern int keep_partial;