* configure.in (HOST_64BIT_TYPE, HOST_U_64BIT_TYPE): Don't override

	* configure.in (HOST_64BIT_TYPE, HOST_U_64BIT_TYPE): Don't override
	values selected in configure.host.  Require both to be defined
	before setting BFD_HOST_64_BIT_DEFINED.  Protect assignment to
	corresponding BFD_HOST vars with quotes.
	<${host64}-${target64}-${want64} in *true*>: Don't exempt gcc;
	Always require BFD_HOST_64_BIT_DEFINED.
	<file_ptr type>: Find off_t size before emitting message.  Combine
	off_t and ftello64 conditional.
	* configure: Regenerate.