devel/darts: unbreak build

checking size of char... configure: error: cannot compute sizeof (char), 77
See `config.log' for more details.

> Script "configure" failed unexpectedly.

• Add USES=autoreconf
• Add TIMESTAMP
• Pet portlint, use PLIST_FILES instead of pkg-plist
• Bump PORTREVISION

Reported by: pkg-fallout