libaom 2.0.2

2021-02-09 v2.0.2
  This release includes several bug fixes.

  - Bug fixes:
    Issue 2643: Modify the assertion in temporal filter intrinsics.

    Issue 2648: Fix unit test ThreadTestLarge.EncoderResultTest/49
    assertion failure.

    Issue 2869: Add -Wimplicit-function-declaration as C flag only.

    Issue 2878: Avoid memset in the av1_filter_intra_predictor module
    functions.

    Issue 2903: Fix a typo bug in apply_temporal_filter_planewise.

    Call av1_setup_frame_size() when dropping a frame in the
    encode_frame_to_data_rate() function in av1/encoder/encoder.c.

BUG=aomedia:2952