1. Add DOxygen \file directives to file-level comments.
This is needed because without these, the file-level comments get
(wrongly) attached to whatever follows, typically 'namespace tflite'.
2. Fix some cut-and-paste errors in the documentation.
3. Change top-level file comments for interpreter.h and
optional_debug_tools.h to use DOxygen markup.
4. Fix a grammar error: "versions ... doesn't ..." => "versions ... don't".
PiperOrigin-RevId: 321807896
Change-Id: I8ffd2cc393a235a270022479c605c70afbe4078d
This change moves //tensorflow/contrib/lite to //tensorflow/lite in preparation
for TensorFlow 2.0's deprecation of contrib/. If you refer to TF Lite build
targets or headers, you will need to update them manually. If you use TF Lite
from the TensorFlow python package, "tf.contrib.lite" now points to "tf.lite".
Please update your imports as soon as possible.
For more details, see https://groups.google.com/a/tensorflow.org/forum/#!topic/tflite/iIIXOTOFvwQ
@angersson and @aselle are conducting this migration. Please contact them if
you have any further questions.
PiperOrigin-RevId: 219536476
