Simplified process of filtering out obsolete package parts and loading descriptors from incremental caches.

Now when file is deleted or dirty (compiled right now), its old package part is used. Current package of file doesn't matter.

compiler/cli/src/org/jetbrains/kotlin/cli/jvm/compiler/KotlinToJVMBytecodeCompiler.java

@@ -338,13 +338,13 @@ public class KotlinToJVMBytecodeCompiler {
         CompilerConfiguration configuration = environment.getConfiguration();
         IncrementalCacheProvider incrementalCacheProvider = configuration.get(JVMConfigurationKeys.INCREMENTAL_CACHE_PROVIDER);
 
-        Collection<FqName> packagesWithRemovedFiles;
+        Collection<FqName> packagesWithObsoleteParts;
         if (moduleId == null || incrementalCacheProvider == null) {
-            packagesWithRemovedFiles = null;
+            packagesWithObsoleteParts = null;
         }
         else {
             IncrementalCache incrementalCache = incrementalCacheProvider.getIncrementalCache(moduleId);
-            packagesWithRemovedFiles = IncrementalPackage.getPackagesWithRemovedFiles(incrementalCache, environment.getSourceFiles());
+            packagesWithObsoleteParts = IncrementalPackage.getPackagesWithObsoleteParts(incrementalCache, environment.getSourceFiles());
         }
         BindingTraceContext diagnosticHolder = new BindingTraceContext();
         GenerationState generationState = new GenerationState(
@@ -359,7 +359,7 @@ public class KotlinToJVMBytecodeCompiler {
                 GenerationState.GenerateClassFilter.GENERATE_ALL,
                 configuration.get(JVMConfigurationKeys.DISABLE_INLINE, false),
                 configuration.get(JVMConfigurationKeys.DISABLE_OPTIMIZATION, false),
-                packagesWithRemovedFiles,
+                packagesWithObsoleteParts,
                 moduleId,
                 diagnosticHolder,
                 outputDirectory