haproxy: add zlib support to --devel

Closes #21405.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
audit: fix dep name escaping
audit: use !~ instead of "not ... =~"
percona-server: workaround for 5.6.12's mysql_config

Apply the same fix as per #21011 and #21324.

Closes #21399.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
transmission 2.81

Closes #21391.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
audit: add TODO
contacts: depends_on both Xcode and CLT

Fixes #21408.
contacts: only needs CLT on 10.8
v8 3.20.7
v8: optionally use readline instead of libedit
v8: remove misleading comment
v8: fix stable/devel
v8: fix checksum
SUPPORTERS: Add £15, cleanup.