implemented the DREAM_SCRIPT_FILE pdialog.2da handling

currently used only when resting outside, so we don't have to bother
with the store window reloading
When PC fails to unlock a door, torment needs to know so it can start dialog
Dakkon has a jillion secret blades
Merge pull request #13 from chilvence/fixesonly

One pst and one general fix from chiv
GetTalkPositionFromScriptable: use the more sensible TalkPos for pst

it's the only one that has it set, so surely it was used
added pst PolymorphEx as a synonym for Polymorph, ignoring int1parameter

what ever does it do?
Actor::RefreshEffects: don't trample the silly pst disguise system