ports-mgmt/portlint: Update to 2.19.10

• Don't check for direct use of commands in PORTNAME [1]
• Split on first '@' to avoid breaking directory detection [2]
• Remove checks for deprecated INSTALLS_ICONS [3]

PR: 229627 [1]

		260246 [2]
		261556 [3]

Submitted by: gerald [1]

		Derek Schrock <dereks@lifeofadishwasher.com> [2]