mutation, and replace the hardcoded constant AC bonuses for ogres, centaurs, and trolls with equivalent levels of it. Also, reduce trolls' AC back to 3, since they've been getting 4 ever since gaining the fur mutation.
git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@9214 c06c8d41-db1a-0410-9941-cceddc491573
UHUHH3KJIOS57OWPZNLBE7VB6YJPQ2PBAGOCAUDFWZGRX3ORB27AC SJSPGNGW5SOKYOQKW6SZOKS2GHZS3WIQVIXDWTO42A3KOQ25G4TAC K2CS6TCX2NDVL2ASEHGP4J4K4IJ6FP3ANNKTSIWVG43HPYSBX6ZQC V3GWLMX6JL3YOYB427VLHPOTGHGWZK64HI6LLUU4X6CFMD2MEQMQC 22QXEMVWB4WB7NRHBLXMRVAYNG36KKTJJABENPBRXYERXEYVBLFQC RB3ZDZXUZ3KVU5C4MFWTQB4J3PCQ5IQS4UVUBRS3TLSPFKBWNFDAC 3ZWALZFSTSIVYXY4BAY6ANGINTDACZC6RSSJTEMQSTSUIE66YOBQC X6JLXMSRNWRGP2PVQYX6Z4OUZLDSSQ2VL3EQQM5Q427MXBMRILEQC 3YX6L7FRX6HJVP6QX7VRWBJ6S2JZNRINKHOTPQGQAOGX2PS7H3JQC case SP_OGRE:AC += 100;break;case SP_TROLL:case SP_CENTAUR:AC += 300;break;