[z2193] Drop temp CREATURE_FLAG_EXTRA_NO_TALKTO_CREDIT

Also toggle git-id tool to work well with recent milestone

(based on commit [12279] - b33c51e)

(based on commit [s1826] - f53366e)
[z2194] Add support for an own error file for scripting library

(based on commit [12280] - e0addb4)

(based on commit [s1827] - 328d652)