Mega Man X6 Widescreen

This default-disabled mod enables the game-specific wide field of view. The
full_2d gameplay classification, the widened background tile loop and streamer,
the reveal-clear, the HUD corner-anchor range, and the intro-stage cull relaxes
all remain identity at native 4:3 and are activated through the stable
mmx6.widescreen plugin id.

Aspect selects 16:9 (fixed) or 21:9 (adaptive, follows the window). Both are
experimental: Mega Man X6's engine renders a true 4:3 view, so there is no
overscan to merely reveal — the extra width is reconstructed.

This replaces the launcher's former Settings rows for aspect ratio and 21:9.
Widescreen is a game-specific enhancement, not a display preference, so it
belongs with the game's other opt-in changes rather than beside renderer and
window options.

Credit

mstan — widescreen implementation and mod integration
