Make slice include path rely on ICE environment variable on win32
Make slice include path rely on ICE environment variable on win32

chiefdome/mumble-code,mkrautz/mumble-sbcelt,Natenom/mumble,panaschieren/mumble-test,ccpgames/mumble,bheart/mumble,niko20010/mumble,mkrautz/mumble-sbcelt,austinliou/mumble,arrai/mumble-record,chiefdome/mumble-code,richard227/mumble,feld/mumble,Natenom/mumble,richard227/mumble,bheart/mumble,Zopieux/mumble,chancegarcia/mumble,chancegarcia/mumble,mbax/mumble,Githlar/mumble,LuAPi/mumble,austinliou/mumble,unascribed/mumble,feld/mumble,SuperNascher/mumble,SuperNascher/mumble,niko20010/mumble,bheart/mumble,LuAPi/mumble,SuperNascher/mumble,Githlar/mumble,LuAPi/mumble,chiefdome/mumble-code,Lartza/mumble,Keridos/mumble,Natenom/mumble,Zopieux/mumble,Lartza/mumble,arrai/mumble-record,feld/mumble,Lartza/mumble,Keridos/mumble,mkrautz/mumble-sbcelt,Lartza/mumble,feld/mumble,Lartza/mumble,mbax/mumble,Githlar/mumble,mkrautz/mumble-sbcelt,Lartza/mumble,Zopieux/mumble,unascribed/mumble,austinliou/mumble,Zopieux/mumble,austinliou/mumble,niko20010/mumble,feld/mumble,feld/mumble,chancegarcia/mumble,ccpgames/mumble,niko20010/mumble,ccpgames/mumble,chiefdome/mumble-code,richard227/mumble,chiefdome/mumble-code,unascribed/mumble,ccpgames/mumble,mbax/mumble,ccpgames/mumble,chancegarcia/mumble,panaschieren/mumble-test,Keridos/mumble,Zopieux/mumble,niko20010/mumble,chancegarcia/mumble,chancegarcia/mumble,bheart/mumble,bheart/mumble,Zopieux/mumble,niko20010/mumble,Keridos/mumble,richard227/mumble,Githlar/mumble,LuAPi/mumble,Lartza/mumble,richard227/mumble,chancegarcia/mumble,mkrautz/mumble-sbcelt,feld/mumble,mkrautz/mumble-sbcelt,mbax/mumble,Githlar/mumble,Githlar/mumble,Keridos/mumble,Natenom/mumble,Githlar/mumble,unascribed/mumble,chiefdome/mumble-code,austinliou/mumble,Keridos/mumble,Zopieux/mumble,Githlar/mumble,SuperNascher/mumble,ccpgames/mumble,niko20010/mumble,LuAPi/mumble,unascribed/mumble,feld/mumble,chancegarcia/mumble,unascribed/mumble,mbax/mumble,panaschieren/mumble-test,bheart/mumble,mbax/mumble,Natenom/mumble,SuperNascher/mumble,panaschieren/mumble-test,mkrautz/mumble-sbcelt,richard227/mumble,mbax/mumble,austinliou/mumble,panaschieren/mumble-test,Keridos/mumble,unascribed/mumble,chancegarcia/mumble,mbax/mumble,SuperNascher/mumble,LuAPi/mumble,arrai/mumble-record,arrai/mumble-record,bheart/mumble,LuAPi/mumble,mkrautz/mumble-sbcelt,richard227/mumble,austinliou/mumble,arrai/mumble-record,austinliou/mumble,arrai/mumble-record,unascribed/mumble,SuperNascher/mumble,Lartza/mumble,panaschieren/mumble-test,niko20010/mumble,chiefdome/mumble-code,panaschieren/mumble-test,chiefdome/mumble-code,arrai/mumble-record,SuperNascher/mumble,Natenom/mumble,richard227/mumble,ccpgames/mumble,Zopieux/mumble,LuAPi/mumble,Natenom/mumble,Natenom/mumble,panaschieren/mumble-test,arrai/mumble-record,ccpgames/mumble,LuAPi/mumble,SuperNascher/mumble,bheart/mumble,Keridos/mumble