pow 0.4.3

Closes #28121.

Signed-off-by: Brett Koonce <koonce@gmail.com>
appengine-java-sdk 1.9.2
google appengine 1.9.2
go-appengine-sdk (386) 1.9.2
go-appengine-sdk (amd64) 1.9.2

Closes #28124.

Signed-off-by: Brett Koonce <koonce@gmail.com>