[patch] Arm BE8 mode and mapping sybols

[Paul Brook]

When building a section code map we are only interested in $a, $t and $d 
mapping symbols. bfd_is_arm_mapping_symbol_name can return true for other 
(obsolete) mapping symbols.  The attached patch makes sure these are ignored.

Tested with cross to arm-none-eabi.
Ok?

Paul

2006-05-05  Paul Brook  <paul@codesourcery.com>

bfd/
	* elf32-arm.c (elf32_arm_output_symbol_hook): Ignore everything but
	a, t and d symbols.
ld/testsuite/
	* ld-arm/arm-be8.d: New test.
	* ld-arm/arm-be8.s: New test.
	* ld-arm/arm-elf.exp: Add arm-be8.
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