[oe] nof/libgcc_s.so installed instead of libgcc_s.so on powerpc

[Matteo Fortini]

I'm building the Angstrom console-image on a powerpc (mpc5121) with 
stable/2009.

the gcc version which is built by default is 4.2.4R5

I specified TARGET_FPU="hard" in the machine description recipe.

However, the libgcc_s.so version which is packaged is from the nof/ dir, 
so that I get funny errors runtime for functions which were referenced 
in the code and were linked ok as external at compile time, but can't be 
found in the nof version of the lib.

Why is it behaving like this?