Hello,

The attached deletes floatformat_arm_ext from include/floatformat.h and 
libiberty/floatformat.c.  As far as I know nothing uses it.  GDB stopped 
using it some time ago.

It has been replaced with the far more useful:

const struct floatformat floatformat_arm_ext_big;
const struct floatformat floatformat_arm_ext_littlebyte_bigword;

Any comments?  If not I'll commit it in a few days.
Andrew