S/390: Regenerate ULPs.
[BZ #16427] Fix ldbl-128 exp overflows.

Invoke the non-IEEE handling only for numbers special also in the IEEE
case.  This aligns the exp handling with the other ldbl variants.
Do not enable asynchronous cancellation in system. Fixes bug 14782.

We needlessly enabled thread cancellation before it was necessary. As
only call that needs to be guarded is waitpid which is cancellation
point we could remove cancellation altogether.
Add ChangeLog entry
PowerPC: sotruss-lib implementation

This patch add the missing sotruss-lib interfaces for PowerPC.