[PATCH, soft-fp]: Do not handle cleared exceptions in __neg_f2() functions

[Uros Bizjak]

Hello!

There is no need to handle exceptions __neg_f2() soft-fp functions as 
they are cleared in previous line.
The patch was tested by bootstrapping gcc for x86_64 target (soft-fp is 
shared between gcc and libc).

Also, please note that soft-fp/extended.h is not used anywhere in glibc 
and could just be removed.

2007-05-19  Uros Bizjak  <ubizjak@gmail.com>

        * soft-fp/negsf2.c: Do not handle cleared exceptions.
        * soft-fp/negdf2.c: Ditto.
        * soft-fp/negtf2.c: Ditto.
        * soft-fp/extended.h: Remove.

Uros.
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