glibc: fix <fenv.h> with -m32
This update fixes the following issues for glibc:
- fails with -m32 on x86-64
- wrong reference counting can cause modules not to be unloaded when closed
- Submitted by Andreas Schwab (Andreas_Schwab)
Fixed bugs
bnc#791676
<fenv.h> fails with -m32 on x86-64
bnc#680125
dlclose() can not unload all dynamic libraries