fix

42671151  フリッグのリンゴ
44330098  冥府の使者ゴーズ
67949763  罪鍵の法－シン・キー・ロウ
These cards special summon tokens with text_atk "?", so IsPlayerCanSpecialSummonMonster() should use atk -2 when checking.
This is because the cards that put a sp_summon limit on atk(Ex. 74952447 かつて神と呼ばれた亀) depends on text_atk.

74841885  天魔神 インヴィシル
Now it grants negation effect at tribute check(before summon_success) instead of summon_success, which may avoid some problem with 83986578  王虎ワンフー and 44947065 強者の苦痛.
Merge branch 'patch5' into patch6
newline added
Merge pull request #571 from salix5/patch6

fix