fix typo in CHANGELOG

Merge pull request NVIDIA#133 from pakmarkthub/dev-issue-131

fixes NVIDIA#131 i.e. no-source bug in gdrdrv-dkms.deb

Merge pull request NVIDIA#130 from NVIDIA/v2_1

update meta-data for 2.1 release

Updated changelogs

Merge pull request NVIDIA#89 from pakmarkthub/dev-sanity-alignment

Fix two more outstanding bugs in unit tests

Updated the dependencies in packages/debian/control

Changed default version in gdrcopy.spec from 1.4 to 2.0

Merge pull request NVIDIA#37 from daniel-k/pr/fix_mr_use_after_free

gdrdrv: fix use-after-free of variable mr in case of error