TensorRT OSS release v7.2.1

Signed-off-by: Rajeev Rao <[email protected]>

TensorRT OSS release v7.2.1

Signed-off-by: Rajeev Rao <[email protected]>

README fixes

Signed-off-by: Rajeev Rao <[email protected]>

Commit used by the 20.08 TensorRT NGC container

Merge pull request NVIDIA#694 from Tyler-D/dev/fix_maskrcnn_kernel_issue

Fix maskrcnn kernel issue on Jetson Nano

Merge pull request NVIDIA#684 from rajeevsrao/master

Use torch 1.4.0 for exporting Tacotron2 ONNX models

Merge pull request NVIDIA#654 from rajeevsrao/release/7.1

TensorRT 7.1 Open Source Release

Add README listing all Plugins

Signed-off-by: Rajeev Rao <[email protected]>

Fix a bug that causes error when batchSize > 1 (NVIDIA#441)

Signed-off-by: Jeffery Zhao <[email protected]>

Fix assertion and documetation for batchedNMSPlugin (NVIDIA#407)

* Fix assertion and documetation for batchedNMSPlugin

Update the assertion to validate input dimensions to handle UFF.
Clarify the purpose of clipBoxes field in plugin documentation.

Signed-off-by: Rajeev Rao <[email protected]>

* Address review comments

Co-authored-by: Rajeev Rao <[email protected]>