[RFA:] fix PR ld/16963, missing SEARCH_DIR for non-sysroot cross-builds

[Hans-Peter Nilsson]

> From: Alan Modra <amodra@gmail.com>
> Date: Mon, 2 Jun 2014 08:30:29 +0200

> bfin, msp, and score all used an extra parameter to genscripts.sh
> to select a "customizer_script" different from the standard one
> named from the emulation.  Which is why your 2014-05-28 patch caused
> http://lists.gnu.org/archive/html/bug-binutils/2014-06/msg00001.html
> This patch renames the scripts to avoid the need of a
> customizer_script param, tidying them in the process.

Thanks for fixing this, I missed that.  It certainly seems the
right solution.

brgds, H-P