2008-12-26  Sandra Loosemore  <sandra@codesourcery.com>

	gdb/
	* serial.c (serial_auto_retry, serial_retry_limit): Define.
	* serial.h (serial_auto_retry, serial_retry_limit): Declare.
	* remote.c (_initialize_remote): Add auto-retry and connect-timeout
	commands.
	* ser-tcp.c (TIMEOUT): Remove, in favor of serial_retry_limit.
	(POLL_INTERVAL): Increase to 5, in favor of backoff logic.
	(wait_for_connect): New function.
	(net_open): Use it.  Add auto-retry logic.
	* NEWS: Document new commands.

	gdb/doc/
	* gdb.texinfo (Remote Configuration): Document new
	"set/show remote auto-retry" and "set/show remote connect-timeout"
	commands.