2008-09-30 Michael Snyder <msnyder@vmware.com>

2008-09-30  Michael Snyder  <msnyder@vmware.com>

	Remote interface for reverse debugging.
	* remote.c (remote_get_execdir, remote_set_execdir): New methods.
	(remote_vcont_resume): Jump out if attempting reverse execution.
	(remote_resume): Check for reverse exec direction, and send
	appropriate command to target.
	(remote_wait): Check target response for NO_HISTORY status.
	Also check for empty reply (target doesn't understand "bs" or "bc).
	(_initialize_remote): Add new methods to remote target vector.