TensorFlow: upstrea changes from git.

Change 109628097
	Fix gcc 4.8.1 compile

	Modified from patch by @assolini here:

	https://github.com/tensorflow/tensorflow/issues/405
Change 109624275
	Make preview frame ImageReader global so that it does not get GC'd.

	This may fix an issue with connecting to the camera on some devices where the underlying Surface is prematurely cleaned up (http://stackoverflow.com/questions/33437961/android-camera-2-api-bufferqueue-has-been-abandoned).
Change 109620599
	- improved test a little to make it easier to understand as it serves as an
	example for users
Change 109614953
	TensorFlow: update tutorials/howtos to point to correct
	location of files, show python example in addition to bazel.
Change 109612732
	TensorFlow: move reading_data into examples, change data dir
	to /tmp/data.  Validated that they all run, but these
	probably need a selftest at some point.
Change 109608695
	Apply 'gate_gradients' only when there is more than one real gradients.
Change 109605014
	There are 3 obvious places to start using TensorFlow. 2/3 of the starting points do not have a link to the installation instructions.
Change 109604287
	Make the `tf.reshape` shape function more restrictive.

	Previously, it did not raise a construction-time error if the input
	shape and the new shape were incompatible; now it detects this and
	raises a `ValueError`.
Change 109603375
	TensorFlow: Move word2vec_basic.py from g3doc/ to examples/

	There are no additional libraries this uses, so nothing else
	needs to be done
Change 109601289
	TensorBoard tag 3
Change 109600908
	Decrease number of scalar values stored by TensorBoard.
	10k is more than displays nicely.
Change 109599464
	Fix "smart restart" functionality in TensorBoard (it throws away dead data)
	After restarts, a file_version event is created that always has step 0.
	We need to ignore this.
Change 109597667
	Switch to using /dev/urandom for TensorFlow randomness.

	Using /dev/random leads to slowdown when running in an environment
	with poor access to an entropy source (such as some VMs). /dev/urandom
	has more predictable performance, and we don't require
	cryptographically secure random number generation, so a PRNG is good
	enough.

	Also removes the use of the RNG in DirectSession construction. This
	was being used to generate a session handle, which is not necessary
	(since a DirectSession owns its devices, we don't need a unique handle
	to key the OpSegment objects registered with the various devices).

	This addresses bugs that have been reported on the mailing list and
	Stack Overflow.
Change 109596906
	Add an is_unsigned property to dtype
Change 109596830
	Remove unnecessary fill in clip_by_value
Change 109591880
	Remove Android demo's libpthread.so dummy file (required by protobuf) from repo and generate it at compile-time.

	This makes the Android demo more portable, as the generated file will now always be the correct archictecture for linking.
Change 109589028
	Isolating out the RTTI part of TensorFlow and add non-RTTI backups for Android.
	This saves about 400KB of the compiled library, when compiling the Android
	tensorflow target with -fno-rtti.
Change 109589018
	Internal reworking of LSTMCell.
Change 109588229
	Allow bool-valued tensors to be persisted.
Change 109577175
	TensorBoard host defaults to 0.0.0.0
Change 109551438
	TensorFlow: move mnist g3doc tutorials into tensorflow/examples.

	Update examples to point to the correct location.

	Adds tests to make sure they don't regress, do some lint cleanup.

Base CL: 109630240

1 files changed, 1 insertions, 1 deletions

diff --git a/tensorflow/core/lib/random/random.cc b/tensorflow/core/lib/random/random.cc
index f0cecfd03c..8bb7730cfc 100644
--- a/tensorflow/core/lib/random/random.cc
+++ b/tensorflow/core/lib/random/random.cc
@@ -22,7 +22,7 @@ namespace tensorflow {
 namespace random {
 
 std::mt19937_64* InitRng() {
-  std::random_device device("/dev/random");
+  std::random_device device("/dev/urandom");
   return new std::mt19937_64(device());
 }