[VC] Radardisc shrinking causes radardisc to be too small with PS2-sized texture

[Vaani-del]

Due to the differences between the PS2 radardisc texture, and the PC texture, the radardisc becomes noticeably too small when using the PS2 texture (or any texture based on it). Proposed fix: add an option to not shrink the radardisc.
PS2 texture:

PC Texture:

[CookiePLMonster]

The option proposed in #107 needs to be added after all.