Alvocidib, Cytarabine, and Mitoxantrone in Treating Patients With Newly Diagnosed Acute Myeloid Leukemia

adult acute basophilic leukemia, adult acute eosinophilic leukemia, adult acute megakaryoblastic leukemia (m7), adult acute minimally differentiated myeloid leukemia (m0), adult acute monoblastic leukemia (m5a), adult acute monocytic leukemia (m5b), adult acute myeloblastic leukemia with maturation (m2), adult acute myeloblastic leukemia without maturation (m1), adult acute myeloid leukemia with 11q23 (mll) abnormalities, adult acute myeloid leukemia with inv(16)(p13;q22), adult acute myeloid leukemia with t(16;16)(p13;q22), adult acute myeloid leukemia with t(8;21)(q22;q22)