Adding missing close parenthesis in code listing.

Fixes #6865

typo `Conv` to `conv2d`

Reformat markdown.

     Change: 138541907

     (cherry picked)

Disable flacky test contrib/slim/learning_test.

Update version string to 0.11.0.

Change: 135747447

(cherry picked from commit 120c3f11)

This reverts commit a1d0c8e5.

Fix: For mac non-docker GPU builds fix handling of test concurrency. …

Cherry-picks for 0.11.0rc2

This make it possible to test OSS GRPC distributed runtime in
dist_test/remote_test.sh against a release build.

Usage example:
1. Build the server using a release whl file. (Obviously this means that
the Linxu CPU PIP release build has to pass first.)
  $ export DOCKER_VERSION_TAG="0.11.0rc1"
    $ tensorflow/tools/dist_test/build_server.sh
    tensorflow/tf_grpc_test_server:${DOCKER_VERSION_TAG}
    http://ci.tensorflow.org/view/Release/job/release-matrix-cpu/TF_BUILD_CONTAINER_TYPE=CPU,TF_BUILD_IS_OPT=OPT,TF_BUILD_IS_PIP=PIP,TF_BUILD_PYTHON_VERSION=PYTHON2,label=cpu-slave/lastSuccessfulBuild/artifact/pip_test/whl/tensorflow-${DOCKER_VERSION_TAG}-cp27-none-linux_x86_64.whl
    --test

    2. Run remote_test.sh:
      $ export TF_DIST_DOCKER_NO_CACHE=1
        $ export
	TF_DIST_SERVER_DOCKER_IMAGE="tensorflow/tf_grpc_test_server:${DOCKER_VERSION_TAG}"
	  $ export TF_DIST_GCLOUD_PROJECT="my-project"
	    $ export TF_DIST_GCLOUD_COMPUTE_ZONE="my-zone"
	      $ export TF_DIST_CONTAINER_CLUSTER="my-cluster"
	        $ export TF_DIST_GCLOUD_KEY_FILE="/path/to/my/key.json"
		  $ tensorflow/tools/dist_test/remote_test.sh
		  "http://ci.tensorflow.org/view/Release/job/release-matrix-cpu/TF_BUILD_CONTAINER_TYPE=CPU,TF_BUILD_IS_OPT=OPT,TF_BUILD_IS_PIP=PIP,TF_BUILD_PYTHON_VERSION=PYTHON2,label=cpu-slave/lastSuccessfulBuild/artifact/pip_test/whl/tensorflow-${DOCKER_VERSION_TAG}-cp27-none-linux_x86_64.whl"
(cherry picked from commit 7ba17e2c)

(cherry picked from commit 446b1cbb)

Cherrypicks and rc2.

Following linker error happened on Xcode:

```
duplicate symbol __Z14tf_git_versionv in:
    /Users/admin/tmp/tensorflow/tensorflow/contrib/ios_examples/simple/../../makefile/gen/lib/libtensorflow-core.a(version_info.o)
duplicate symbol __Z19tf_compiler_versionv in:
    /Users/admin/tmp/tensorflow/tensorflow/contrib/ios_examples/simple/../../makefile/gen/lib/libtensorflow-core.a(version_info.o)
ld: 2 duplicate symbols for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
```

These functions are defined in `tensorflow/core/util/version_info.cc`.
It seems an object file for it is added twice in Makefile:
(`$(wildcard tensorflow/core/util/*.cc)` and `$(tensorflow/core/util/version_info.cc)
`)

the shape inference function and the kernel.
Change: 134434589

Fixes and improvements to docker build script and dockerfiles

1) Clean up large Bazel build cache. Total filesystem size reduction as seen by du -sh /:
  devel image: 1.5 GB (Before: 2.9 GB; After: 1.4 GB)
  devel-gpu image: 2.3 GB (Before: 4.7 GB; After: 2.4 GB)
2) Using nvidia-docker for GPU docker build.
3) Upgrade Bazel version from 0.3.1 to 0.3.2.
4) Add missing libcurl3-dev build dependency to devel images.
5) Add scipy and sklearn to Dockerfile.devel-gpu to enhance consistency with other image types (e.g., Dockerfile.devel).
6) Remove the obsolete and unnecessary --recurse-submodules flag for git clone.

Related to GH issues: https://github.com/tensorflow/tensorflow/issues/4116 and https://github.com/tensorflow/tensorflow/issues/4117

However, not using the "git clone --depth 1" suggested by issue #4117, because the size of the git repo is only reduced by about 50 MB by the "--depth 1" flag. This space saving is small compared to the space saving due to bazel cache removal. The complete history of the git repo can be useful for certain development purposes.
Change: 136302103

* Temporarily remove tests that fail running with a single GPU.

* Fix tags order according to buildifier

Update doc and release note for 0.11.0rc1

cherry-picks for 0.11.0rc1 

(cherry picked from commit ce6eeda2)

Change: 136505720

(cherry picked from commit 2c3a42e2)

Change: 135943933

(cherry picked from commit 2aa43f59)

(cherry picked from commit 923c999d)

Change: 136158550

(cherry picked from commit 60bb54e3)