Fix bin linking for app-engine-java-sdk

Previous code was linking '*' to libexec/bin. Fixed by globbing
the files in the libexec directory.

Closes #24793.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
fwknop: change version to 2.5.1.1

Closes #24792.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>