neon: enable warnings to unbreak ./configure run.

./configure relies on the compiler issueing warnings, turning
them into errors in order to to determine certain settings,
such as printf formatting strings.

Closes #17069.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
Redis 2.6.8

Closes #17070.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
quotatool 1.6.2

Closes #17071.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
couchdb 1.2.1

Closes #17072.

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