Update to 1.8

• Add LICENSE
• Update PORTDOCS
• While I'm here:
  • Remove .include <bsd.port.options.mk>
  • Use MAKE_CMD instead of GMAKE

Changes: http://sun.hasenbraten.de/vasm/
PR: 219741
Submitted by: Carsten Larsen <cs@innolan.dk> (maintainer)