[RFA] win32: bfd_cache_close after kill

[Jerome Guitton]

Jerome Guitton (guitton@act-europe.fr):

> 
> When the inferior is killed, it is safe the release the different file
> handles that BFD keeps open. It is particularly useful on Win32 (and
> presumably on HP UX) to be able to recompile and restart a new debugging
> session without quitting GDB...
> 
> Tested on i686 linux, no regression. I do not know if it is possible to write
> a test for this feature with the DejaGnu framework...

With the complete patch... Comments?

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