Prohibit JVM target 1.6

But still compile stdlib, reflect, kotlin.test and scripting runtimes
with JVM target 1.6 to simplify migration from Kotlin 1.6 to 1.7.

 #KT-45165 Fixed

core/compiler.common.jvm/build.gradle.kts

@@ -7,6 +7,7 @@ project.configureJvmToolchain(JdkMajorVersion.JDK_1_6)
 
 dependencies {
     api(project(":core:compiler.common"))
+    kotlinCompilerClasspath(project(":libraries:tools:stdlib-compiler-classpath"))
 }
 
 sourceSets {

core/compiler.common/build.gradle.kts

@@ -9,6 +9,7 @@ dependencies {
     api(project(":core:util.runtime"))
     api(kotlinStdlib())
     api(project(":kotlin-annotations-jvm"))
+    kotlinCompilerClasspath(project(":libraries:tools:stdlib-compiler-classpath"))
 }
 
 sourceSets {

core/descriptors.jvm/build.gradle.kts

@@ -13,6 +13,7 @@ dependencies {
     api(project(":core:deserialization.common.jvm"))
     api(project(":core:util.runtime"))
     api(commonDependency("javax.inject"))
+    kotlinCompilerClasspath(project(":libraries:tools:stdlib-compiler-classpath"))
 }
 
 sourceSets {

core/descriptors.runtime/build.gradle.kts

@@ -26,6 +26,8 @@ dependencies {
     testApi(projectTests(":generators:test-generator"))
 
     testApi(intellijCore())
+
+    kotlinCompilerClasspath(project(":libraries:tools:stdlib-compiler-classpath"))
 }
 
 sourceSets {

core/descriptors/build.gradle.kts

@@ -10,6 +10,7 @@ dependencies {
     api(project(":core:util.runtime"))
     api(kotlinStdlib())
     api(project(":kotlin-annotations-jvm"))
+    kotlinCompilerClasspath(project(":libraries:tools:stdlib-compiler-classpath"))
 }
 
 sourceSets {

core/deserialization.common.jvm/build.gradle.kts

@@ -9,6 +9,7 @@ dependencies {
     api(project(":core:metadata.jvm"))
     api(project(":core:deserialization.common"))
     implementation(project(":core:compiler.common.jvm"))
+    kotlinCompilerClasspath(project(":libraries:tools:stdlib-compiler-classpath"))
 }
 
 sourceSets {

core/deserialization.common/build.gradle.kts

@@ -8,6 +8,7 @@ project.configureJvmToolchain(JdkMajorVersion.JDK_1_6)
 dependencies {
     api(project(":core:compiler.common"))
     api(project(":core:metadata"))
+    kotlinCompilerClasspath(project(":libraries:tools:stdlib-compiler-classpath"))
 }
 
 sourceSets {

core/deserialization/build.gradle.kts

@@ -11,6 +11,7 @@ dependencies {
     api(project(":core:util.runtime"))
     api(project(":core:descriptors"))
     api(commonDependency("javax.inject"))
+    kotlinCompilerClasspath(project(":libraries:tools:stdlib-compiler-classpath"))
 }
 
 sourceSets {

core/metadata.jvm/build.gradle.kts

@@ -7,6 +7,7 @@ project.configureJvmToolchain(JdkMajorVersion.JDK_1_6)
 
 dependencies {
     api(project(":core:metadata"))
+    kotlinCompilerClasspath(project(":libraries:tools:stdlib-compiler-classpath"))
 }
 
 sourceSets {

core/metadata/build.gradle.kts

@@ -8,6 +8,7 @@ project.configureJvmToolchain(JdkMajorVersion.JDK_1_6)
 dependencies {
     api(protobufLite())
     api(kotlinStdlib())
+    kotlinCompilerClasspath(project(":libraries:tools:stdlib-compiler-classpath"))
 }
 
 sourceSets {

core/util.runtime/build.gradle.kts

@@ -7,6 +7,7 @@ project.configureJvmToolchain(JdkMajorVersion.JDK_1_6)
 
 dependencies {
     compileOnly(kotlinStdlib())
+    kotlinCompilerClasspath(project(":libraries:tools:stdlib-compiler-classpath"))
 }
 
 sourceSets {