[uClibc] libm in staging dir has unresolved symbols on PPC, soft FP

[Joakim Tjernlund]

> Executing LD_BIND_NOW=1 ls on a PPC with soft FP buildroot env, this
> error messages pops out:
> ls: can't resolve symbol '__unpack_d'
> 
> __unpack_d is a local symbol in libgcc_s_nof.so.
> I suspect that libm in staging dir has been linked with an early
> libgcc_s_nof.so from the gcc build.

Forgot to state gcc version: gcc 3.4.3