Absolute paths in BFD

[Mark E.]

> Testing something like DOSISH_FILENAMES in binutils/ar.c looks wrong.
> DOSISH_FILENAMES is meaningful on the host, but binutils/ar.c deals
> with files that are specific to the target.

Assuming this is correct, that means that in either configure or configure.in 
at the top level needs to set a config.h variable based on the target which 
could/would then let the macros for libiberty be set properly. Then replace 
DOSISH_FILENAMES with HAVE_DOS_STYLE_FILE_SYSTEM to be like gcc. But before I 
get too far with this, by 'target' I'm assuming your talking about a 
configure script type of target and not a BFD type of target.