message: Change RELEASE.md to specify CUDA 9.0
  PR for (tinyest PR ever?)
diff: # Release 1.5.0
  ## Breaking Changes
  -* Prebuilt binaries are now built against CUDA 9 and cuDNN 7.
  +* Prebuilt binaries are now built against CUDA 9.0 and cuDNN 7.
  +* Our Linux binaries are built using ubuntu 16 containers, potentially
  + introducing glibc incompatibility issues with ubuntu 14.
  * Starting from 1.6 release, our prebuilt binaries will use AVX instructions.
  This may break TF on older CPUs.
  preview version is now available.
  * [TensorFlow Lite](https://github.com/tensorflow/tensorflow/tree/r1.5/tensorflow/contrib/lite)
  dev preview is now available.
  -* CUDA 9 and cuDNN 7 support.
  +* CUDA 9.0 and cuDNN 7 support.
  * Accelerated Linear Algebra (XLA):
  * Add `complex64` support to XLA compiler.
  * `bfloat` support is now added to XLA infrastructure.
  