objdump -S omits source when input uses .gnu_debuglink

[Nick Clifton]

Hi Noah,

> Your patch fixes the problem here.  Thank you!

Excellent.  I have checked the patch in along with this ChangeLog entry.

Cheers
   Nick

bfd/ChangeLog
2007-06-22  Nick Clifton  <nickc@redhat.com>

	* dwarf2.c: Add support for reading in debug information via a
	.gnu_debuglink section:
	(struct dwarf2_debug): Add bfd field to record the bfd containing
	the debug info.
	(parse_comp_unit): Remove ABFD parameter.  Instead use the bfd
	field in the dwarf2_debug structure.
	(_bfd_dwarf2_find_nearest_line): If a debug info section could not
	be found in the current bfd call bfd_follow_gnu_debuglink to see
	if another file contains the debug information.  If it does, open
	it and continue.
	(_bfd_dwarf2_find_line): Likewise.