[patch] Fix C++ no .eh_frame_hdr table will be created (PR 6893)

[Nick Clifton]

Hi Jan,

>> -if ![is_elf_format] {
>> +if { ![is_elf_format] \
>> +     || (![istarget i?86-*-linux*] \
>> +	 && ![istarget powerpc*-*-linux*] \
>> +	 && ![istarget s390*-*-linux*] \
>> +	 && ![istarget x86_64-*-linux*]) } {
> 
> There are more targets supporting cfi (all those that define
> TARGET_USE_CFIPOP).

If this test is needed for more than just one file then we ought to move 
it into ld/testsuite/lib/ld-lib.exp so that bug fixes and additions can 
be added in just one place.

Cheers
   Nick