[PATCH][GOLD] Fix lower bound for number of bits.

[Ian Lance Taylor]

"Doug Kwan (關振德)" <dougkwan@google.com> writes:

> 2012-02-02  Doug Kwan  <dougkwan@google.com>
>
>         * arm.cc (Arm_relocate_functions::abs8,
>         Arm_relocate_functions::abs16): Use
>         Bits::has_signed_unsigned_overflow32.
>         (Arm_relocate_functions::thm_abs8): Correct range of
>         overflow check.
>         * reloc.h (Bits class): Change minimum number of bits from 0 to 1
>         in assertions.

This is OK.

Thanks.

Ian