Dashmode now has its own animation, SPR2_PEEL. Requires a new PLAYER.DTA. I...

Dashmode now has its own animation, SPR2_PEEL. Requires a new PLAYER.DTA. I made a lot of references to the peelout here because I'm not sure what else to call a Sonic character's faster-than-usual-running animation and SPR2_DASH was taken.

* SPR2_PEEL, SPR2_SPEE.
* S_PLAY_PEEL, S_PLAY_SUPER_PEEL.
* PA_PEEL.
* Dashmode actually starts charging from runspeed instead of the arbitrarily calculated (normalspeed - 5*FRACUNIT). This just made things easier, honestly, and it's 1 FU of difference compared to the current test case.