[maven-release-plugin] prepare release prerelease/5.0-alpha.7

[maven-release-plugin] prepare release prerelease/5.0-alpha.6

[maven-release-plugin] prepare release prerelease/5.0-alpha.5

[maven-release-plugin] prepare release prerelease/5.0-alpha.4

[maven-release-plugin] prepare release prerelease/5.0-alpha.3

[maven-release-plugin] prepare release prerelease/5.0-alpha.2

[maven-release-plugin] prepare release prerelease/5.0-alpha.1

Changed the version for release.

--HG--
branch : release

Updated the version for release.

--HG--
branch : release

Modified a doc comment.

--HG--
branch : release