libstdc++/8197: std::sin(float) causes undefined reference to sinf

[B. Kosnik]

>Thanks. I checked out latest CVS last night and this problem is fixed in
>gcc version 3.3 20021101 (experimental). Technically this is a regression
>from 2.95.3. __builtin_sinf didn't work there, either but the cmath
>header didn't use __builtin_sinf.

this is on the branch now. thanks for your help

-benjamin