Update toplevel files from gcc

[Peter Foley]

When building a cross compiler targeting cygwin, the target objcopy
binary wasn't properly picked up.
It appears that a fix for this has been commited to the gcc tree
https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=fc740d700395d97b6719e8a0e64f75d01ab0d8fd

A patch to copy the updated Makefile.def, Makefile.tpl and
configure.ac from gcc and regenerate Makefile.in and configure is
1.4M, so too large to send to the mailing list.

Would it be possible for someone to sync the latest toplevel files from gcc?

Thanks,

Peter Foley