Dmitriy Zaporozhets authored 5 years ago and Achilleas Pipinellis committed 5 years ago

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

This allows us (and others) to test drive Puma without it affecting all
users. Puma can be enabled by setting the environment variable
"EXPERIMENTAL_PUMA" to a non empty value.