java-decompiler: fixes and cleanups

- console decompiler: resource closing, lookup instead of scan, error reporting
- logger interface reworked
- saver interface renamed
- bytecode provider returns byte array (to reduce stream leakage)
- extra level of context unit avoided
- unneeded exceptions, dead code, formatting

src/org/jetbrains/java/decompiler/main/extern/IResultSaver.java

@@ -0,0 +1,36 @@
+/*
+ * Copyright 2000-2014 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.jetbrains.java.decompiler.main.extern;
+
+import java.util.jar.Manifest;
+
+public interface IResultSaver {
+  void saveFolder(String path);
+
+  void copyFile(String source, String path, String entryName);
+
+  void saveClassFile(String path, String qualifiedName, String entryName, String content);
+
+  void createArchive(String path, String archiveName, Manifest manifest);
+
+  void saveDirEntry(String path, String archiveName, String entryName);
+
+  void copyEntry(String source, String path, String archiveName, String entry);
+
+  void saveClassEntry(String path, String archiveName, String qualifiedName, String entryName, String content);
+
+  void closeArchive(String path, String archiveName);
+}