MFH: r413630 r413645 r414519

Update ImageMagick to 6.9.3-8.

Fix the handling of type-apple.xml under @sample. PORTREVISION
bump for plist change.

Committed under just-fix-it.

Update ImageMagick to 6.9.3-9.

• Switch to USES=localbase.
• Mark this version as legacy version now that ImageMagick7 is released. Upstream will continue to support this version.
• Switch to CONFLICT_INSTALL

Approved by: ports-secteam (with hat)