Door issues

[Blzut3]

Original report by Anonymous.

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I've noticed some problems with the doors. On E1M9 the door in front of Hans cannot close automatically if the boss doesn't notice the player when the door is opoened (can be achieved by quickly strafing left or right after pressing the use button). On the second thought, in the original DOS version (even in other ports) Fake Hitlers can't open doors, making it otherwise in ECWolf was intentional or it's an oversight?

[Blzut3]

The fake Hitlers opening doors is definitely an oversight from merging all the chase functions.

Will need to check the deal with the doors.

[Blzut3]

Fixed: Numerous Fake Hitler issues (fixes #283)

• Fake Hitlers shouldn't be able to open doors
• Fake Hitlers shouldn't have had the CHF_BACKOFF flag
• Fake Hitlers are always supposed to call SelectDodgeDir
  Added CHF_ALWAYSDODGE to address that last point and added it to the Dog actors. Only having a Melee attack produces this behavior, but it would be better going forwards to be explicit.

[Blzut3]

Split the second issue off to #311