games/imaze: unbreak and modernize port

This includes:

• Bump PORTREVISION
• Unbreak fetch
• Remove TUCOWS from MASTER_SITES
• Add ATHENA option and set it by default, instead of XVIEW
• Convert GUI's options from RADIO to SINGLE
• Switch to options helpers
• Add MOTIFLIB define with proper value to fix linkage
• Add xmu to USE_XORG
• Regenerate patches

PR: 210081
Submitted by: lightside <lightside@gmx.com>
Approved by: junovitch (mentor)