* autoload.cc (.#dllname_info): Call _std_dll_init on x86_64 bit, too.
	(INIT_WRAPPER): Change to accommodate the change of the init functions
	from sysv_abit to ms_abi.  Fix preceeding comment accordingly.  Add
	SEH information and comments.
	(std_dll_init): Drop leading underscore on x86_64.  Drop sysv_abi
	comment.
	(wsock_init): Ditto.
	(LoadDLLprime): Drop surrounding ifdef to accommodate above underscore
	juggling.