Remove some configuration duplication by using 'tasks.withType()'

Setup common options of java and kotlin compiler tasks.

libraries/stdlib/build.gradle

@@ -48,17 +48,8 @@ artifacts {
     archives javadocJar
 }
 
-[compileJava, compileBuiltinsJava].each { task ->
-    task.sourceCompatibility = 1.6
-    task.targetCompatibility = 1.6
-    task.options.fork = true
-    task.options.forkOptions.executable = "${JDK_16}/bin/javac"
-}
-
 compileBuiltinsKotlin {
-    compilerJarFile = bootstrapCompilerFile
     kotlinOptions {
-        jdkHome = JDK_16
         freeCompilerArgs = [
                 "-version",
                 "-Xallow-kotlin-package",
@@ -70,7 +61,6 @@ compileBuiltinsKotlin {
 }
 compileKotlin {
     kotlinOptions {
-        jdkHome = JDK_16
         freeCompilerArgs = [
                 "-version",
                 "-Xallow-kotlin-package",

libraries/stdlib/common/build.gradle

@@ -33,10 +33,6 @@ compileKotlinCommon {
 }
 */
 
-compileKotlinCommon.compilerJarFile = bootstrapCompilerFile
-
-
-
 jar {
     baseName = project.name
     manifest {

libraries/stdlib/jre7/build.gradle

@@ -31,8 +31,12 @@ artifacts {
     archives javadocJar
 }
 
-compileKotlin {
+
+tasks.withType(org.jetbrains.kotlin.gradle.tasks.KotlinCompile) {
     kotlinOptions.jdkHome = JDK_17
+}
+
+compileKotlin {
     kotlinOptions.freeCompilerArgs = [
             "-Xallow-kotlin-package",
             "-Xmultifile-parts-inherit",
@@ -42,7 +46,6 @@ compileKotlin {
 }
 
 compileTestKotlin {
-    kotlinOptions.jdkHome = JDK_17
     kotlinOptions.freeCompilerArgs = ["-Xallow-kotlin-package"]
 }
 

libraries/stdlib/jre8/build.gradle

@@ -32,9 +32,12 @@ artifacts {
     archives javadocJar
 }
 
-compileKotlin {
+tasks.withType(org.jetbrains.kotlin.gradle.tasks.KotlinCompile) {
     kotlinOptions.jdkHome = JDK_18
     kotlinOptions.jvmTarget = 1.8
+}
+
+compileKotlin {
     kotlinOptions.freeCompilerArgs = [
             "-Xallow-kotlin-package",
             "-Xmultifile-parts-inherit",
@@ -44,8 +47,6 @@ compileKotlin {
 }
 
 compileTestKotlin {
-    kotlinOptions.jdkHome = JDK_18
-    kotlinOptions.jvmTarget = 1.8
     kotlinOptions.freeCompilerArgs = ["-Xallow-kotlin-package"]
 }