Add support for @CompilerOptions annotation for supplying compiler

options from scripts.

#KT-34274 fixed

libraries/tools/kotlin-main-kts-test/test/org/jetbrains/kotlin/mainKts/test/mainKtsTest.kt

@@ -7,9 +7,7 @@ package org.jetbrains.kotlin.mainKts.test
 import org.jetbrains.kotlin.mainKts.MainKtsScript
 import org.junit.Assert
 import org.junit.Test
-import java.io.ByteArrayOutputStream
-import java.io.File
-import java.io.PrintStream
+import java.io.*
 import kotlin.script.experimental.api.*
 import kotlin.script.experimental.host.toScriptSource
 import kotlin.script.experimental.jvm.baseClassLoader
@@ -90,6 +88,32 @@ class MainKtsTest {
         Assert.assertEquals(listOf("Hi from common", "Hi from middle", "sharedVar == 5"), out)
     }
 
+    @Test
+    fun testCompilerOptions() {
+
+        val out = captureOut {
+            val res = evalFile(File("$TEST_DATA_ROOT/compile-java6.main.kts"))
+            assertSucceeded(res)
+            assertIsJava6Bytecode(res)
+        }.lines()
+
+        Assert.assertEquals(listOf("Hi from sub", "Hi from super", "Hi from random"), out)
+    }
+
+    private fun assertIsJava6Bytecode(res: ResultWithDiagnostics<EvaluationResult>) {
+        val scriptClassResource = res.valueOrThrow().returnValue.scriptClass!!.java.run {
+            getResource("$simpleName.class")
+        }
+
+        DataInputStream(ByteArrayInputStream(scriptClassResource.readBytes())).use { stream ->
+            val header = stream.readInt()
+            if (0xCAFEBABE.toInt() != header) throw IOException("Invalid header class header: $header")
+            val minor = stream.readUnsignedShort()
+            val major = stream.readUnsignedShort()
+            Assert.assertTrue(major == 50)
+        }
+    }
+
     private fun assertSucceeded(res: ResultWithDiagnostics<EvaluationResult>) {
         Assert.assertTrue(
             "test failed:\n  ${res.reports.joinToString("\n  ") { it.message + if (it.exception == null) "" else ": ${it.exception}" }}",

libraries/tools/kotlin-main-kts-test/testData/compile-java6.main.kts

@@ -0,0 +1,18 @@
+@file:CompilerOptions("-jvm-target", "1.6")
+
+interface Test {
+    fun print()
+    fun printSuper() = println("Hi from super")
+}
+
+class TestImpl : Test {
+    override fun print() = println("Hi from sub")
+}
+
+inline fun printRandom() = println("Hi from random")
+
+TestImpl().run {
+    print()
+    printSuper()
+    printRandom()
+}