Afatinib Recruiting Phase 1 Trials for Stage IVB Pancreatic Cancer / Stage III Pancreatic Cancer AJCC v6 and v7 / Stage III Pancreatic Cancer / Bile Duct Carcinoma / Solid Neoplasms / Stage IVA Pancreatic Cancer / Recurrent Malignant Solid Neoplasm / Advanced Malignant Solid Neoplasm / Recurrent Pancreatic Carcinoma Treatment