Sum-It was built in debug mode.

Makes the executable 1MB instead of 30MB big!
HaikuWebkit 1.4.1.

Fixes a crash encountered on 1.4.0.
gcc: explicitly disable TLS on x86_64.

* Building gcc-4.8.3 on x86_64 with TLS support fails with an ICE,
  so don't use TLS until the problem is fixed.