[RFC] ARM multilib changes and switch to EABI version 5

[Sebastian Huber]

I modified nearly all linker command files of the ARM BSPs with the exception of:

gba/startup/linkcmds
nds/coproc/coproc.ld

Please check that your BSP works.

The BSPs use now a base linker command file:

shared/startup/linkcmds.base

This eliminated a lot of copy and paste.  This change was necessary as a
preliminary work to switch to the EABI version 5.

-- 
Sebastian Huber, embedded brains GmbH

Address : Obere Lagerstr. 30, D-82178 Puchheim, Germany
Phone   : +49 89 18 90 80 79-6
Fax     : +49 89 18 90 80 79-9
E-Mail  : sebastian.huber at embedded-brains.de
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