Rename jet -> kotlin in descriptor.loader.java, frontend.java

Split package 'lang/resolve/java' into two semantically different packages:
'resolve/jvm' and 'load/java'. Also rename 'lang/resolve/kotlin' to
'load/kotlin'

compiler/tests/org/jetbrains/kotlin/codegen/PropertyGenTest.java

@@ -18,7 +18,7 @@ package org.jetbrains.kotlin.codegen;
 
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.jet.ConfigurationKind;
-import org.jetbrains.jet.lang.resolve.java.JvmAbi;
+import org.jetbrains.kotlin.load.java.JvmAbi;
 import org.jetbrains.org.objectweb.asm.Opcodes;
 
 import java.lang.reflect.*;