[maven-release-plugin] copy for tag powermock-1.6.3

[maven-release-plugin] copy for tag powermock-1.6.2

[maven-release-plugin] copy for tag powermock-1.6.1

[maven-release-plugin] copy for tag powermock-1.6.0

[maven-release-plugin] copy for tag powermock-1.5.6

[maven-release-plugin] copy for tag powermock-1.5.5