Update to 2.18.9.

• Add check for sensible CMAKE settings to ports-mgmt/portlint [1]
• Do not warn about absolute paths in *_OLD_CMD (when USES=shebangfix is set) [2]
• If an option only has QMAKE_ON or QMAKE_OFF settings, it is flagged as no effect [3]
• Check for options defined per ARCH to make sure we don't have a lot of false positives. [4]

(Note: [1] was already in PORTREVISION 2).

PR: 232948 [2]

		237045 [3]
		234888 [4]

Submitted by: adridg [3]