Update to 2.18.5.

• Do not complain about extra FLAVORS in *_DEPENDS. [1]
• Do not fully expand variable dependencies to allow for more granular checks. [2]
• Allow GH_* in USES section. [3]
• Check for duplication between *_USES and USES. [4]
• Check for incorrect use of *_CMAKE_ARGS [5]
• Check that CMAKE_BOOL arguments do not contain a -D flag [5]
• Check for use of autoplist and pkg-plkist or PLIST_FILE. [6]

PR: 231420 [1]

		231421 [2]
		231422 [3]
		231566 [4]
		231894 [5]
		231865 [6]

Submitted by: db [3] [6]