Thrift: Better handling of strerror_r.

Thrift: Better handling of strerror_r.

Summary:
Someone thought it would be a good idea to have two different signatures
for strerror_r, with subtly different semantics (strlcpy = smart).
We now work properly with either of them.

Also fixed a test to work on 32-bit, you sloppy <expletive>s.

Reviewed By: mcslee

Test Plan:
Rebuild thrift.
Force one of these errors to be thrown.

Revert Plan: ok

git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@665215 13f79535-47bb-0310-9956-ffa450edef68