Oxycodone Terminated Phase N/A Trials for Chronic Myeloproliferative Disorders / Precancerous Conditions / Unspecified Adult Solid Tumor, Protocol Specific / Myelodysplastic/Myeloproliferative Neoplasms / Brain and Central Nervous System Tumors / Leukemias / Multiple Myeloma and Plasma Cell Neoplasm / Pain / Disorders, Lymphoproliferative / Myelodysplastic Syndromes (MDS) / Malignant Lymphomas Supportive Care