Add new remain-0.2.1

* Old remain-0.1.3 uses libsyn-0.15.42
* New remain-0.2.1 uses libsyn-1.0.7
* Fill back missing NOTICE,LICENSE,METADATA,MODULE_LICENSE_* files

Bug: 143477201
Bug: 150877376
Test: make
Change-Id: Ie33535733e26210ca2ca19ec3fd00f5649faa4db
90 files changed
tree: b234233124fbd257ac9a953c924c18ac97ffd996
  1. 0.1.3/
  2. 0.2.1/