Put comments and whitespaces under body in script files

It's more consistent to normal function body for IDE.
Doc comments in file beginning are now sticks to declarations
correctly.
Moving declarations at the end of scripts is fixed

compiler/tests/org/jetbrains/kotlin/parsing/ParsingTestGenerated.java

@@ -2689,6 +2689,12 @@ public class ParsingTestGenerated extends AbstractParsingTest {
                 doParsingTest(fileName);
             }
 
+            @TestMetadata("FunctionComment.kts")
+            public void testFunctionComment() throws Exception {
+                String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/psi/script/FunctionComment.kts");
+                doParsingTest(fileName);
+            }
+
             @TestMetadata("Import.kts")
             public void testImport() throws Exception {
                 String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/psi/script/Import.kts");