Merge pull request protocolbuffers#6790 from protocolbuffers/rafi-kam…

…al-patch-4

Update CHANGES.txt for 3.10.1 release

Merge pull request protocolbuffers#6721 from protocolbuffers/rafi-kam…

…al-patch-1

Update CHANGES.txt with changes since 3.10.0-RC1

Update version to 3.9.2 (protocolbuffers#6682)

Merge pull request protocolbuffers#6621 from rafi-kamal/3.10.x-201909…

…051012

Update protobuf version for Java and PHP

Update protobuf version (protocolbuffers#6472)

Update protobuf version (protocolbuffers#6366)

Merge pull request protocolbuffers#6298 from TeBoring/3.9.x-merge

Merge master into 3.9.x

Merge pull request protocolbuffers#6160 from haon4/3.8.x-20190521140707

Update protobuf version to 3.8.0

Merge pull request protocolbuffers#6083 from haon4/changes3_8_0

Update change log for 3.8.0

Update version number to 3.7.1 (protocolbuffers#5947)

* Update version number to 3.7.1

* Update version number in port_def.inc