Add module-info.java for standard Kotlin libraries

Using the new multi-release jar feature, store compiled
module-info.class files into META-INF/versions/9 instead of the artifact
root. Hopefully, this will break fewer tools which do not support
module-info.class files because any sane tool should not do anything
with files in META-INF because before Java 9 that directory only
contained resources.

Upgrade some Maven plugins to newer versions which do not fail on
module-info.class files

 #KT-21266 In Progress

libraries/stdlib/build.gradle

@@ -41,6 +41,11 @@ sourceSets {
             srcDir 'test'
         }
     }
+    java9 {
+        java {
+            srcDir 'jvm/java9'
+        }
+    }
 }
 
 dependencies {
@@ -56,27 +61,31 @@ configurations {
     builtins
 }
 
+createCompileJava9Task(project, "compileJava9", "kotlin.stdlib", [sourceSets.builtins.output/* TODO: sourceSets.annotations.output?*/])
+
 task originalStdlibJar(type: Jar) {
     baseName = 'original-kotlin-stdlib'
     from sourceSets.main.output
 }
 
 jar {
-    manifestAttributes(manifest, project, 'Main')
+    manifestAttributes(manifest, project, 'Main', true)
     from("${rootDir}/dist/builtins")
     from sourceSets.builtins.output
     from sourceSets.experimental.output
+    from compileJava9.outputs
 }
 
 task distJar(type: Jar) {
     baseName = 'dist-kotlin-stdlib'
     version = null
-    manifestAttributes(manifest, project, 'Main')
+    manifestAttributes(manifest, project, 'Main', true)
     from("${rootDir}/dist/builtins")
     from sourceSets.annotations.output
     from sourceSets.builtins.output
     from sourceSets.main.output
     from sourceSets.experimental.output
+    from compileJava9.outputs
 }
 
 task builtinsJar(type: Jar) {

libraries/stdlib/jdk7/build.gradle

@@ -26,10 +26,18 @@ sourceSets {
             }
         }
     }
+    java9 {
+        java {
+            srcDirs = ['java9']
+        }
+    }
 }
 
+createCompileJava9Task(project, "compileJava9", "kotlin.stdlib.jdk7")
+
 jar {
-    manifestAttributes(manifest, project, 'Main')
+    manifestAttributes(manifest, project, 'Main', true)
+    from compileJava9.outputs
 }
 
 artifacts {

libraries/stdlib/jdk7/java9/module-info.java

@@ -0,0 +1,5 @@
+module kotlin.stdlib.jdk7 {
+    requires transitive kotlin.stdlib;
+
+    exports kotlin.jdk7;
+}

libraries/stdlib/jdk8/build.gradle

@@ -29,10 +29,18 @@ sourceSets {
             }
         }
     }
+    java9 {
+        java {
+            srcDirs = ['java9']
+        }
+    }
 }
 
+createCompileJava9Task(project, "compileJava9", "kotlin.stdlib.jdk8")
+
 jar {
-    manifestAttributes(manifest, project, 'Main')
+    manifestAttributes(manifest, project, 'Main', true)
+    from compileJava9.outputs
 }
 
 artifacts {

libraries/stdlib/jdk8/java9/module-info.java

@@ -0,0 +1,7 @@
+module kotlin.stdlib.jdk8 {
+    requires transitive kotlin.stdlib;
+
+    exports kotlin.collections.jdk8;
+    exports kotlin.streams.jdk8;
+    exports kotlin.text.jdk8;
+}

libraries/stdlib/jvm/java9/module-info.java

@@ -0,0 +1,37 @@
+module kotlin.stdlib {
+    exports kotlin;
+    exports kotlin.annotation;
+    exports kotlin.collections;
+    exports kotlin.comparisons;
+    exports kotlin.concurrent;
+    exports kotlin.io;
+    exports kotlin.jvm;
+    exports kotlin.jvm.functions;
+    exports kotlin.math;
+    exports kotlin.properties;
+    exports kotlin.ranges;
+    exports kotlin.reflect;
+    exports kotlin.sequences;
+    exports kotlin.system;
+    exports kotlin.text;
+
+    exports kotlin.coroutines.experimental;
+    exports kotlin.coroutines.experimental.intrinsics;
+    exports kotlin.coroutines.experimental.jvm.internal;
+    exports kotlin.experimental;
+
+    exports kotlin.internal;
+    exports kotlin.jvm.internal;
+    exports kotlin.jvm.internal.markers;
+
+    // TODO?
+    // exports org.jetbrains.annotations;
+
+    // Open packages with .kotlin_builtins files to kotlin-reflect, to allow reflection to load built-in declarations there
+    opens kotlin to kotlin.reflect;
+    opens kotlin.annotation to kotlin.reflect;
+    opens kotlin.collections to kotlin.reflect;
+    opens kotlin.internal to kotlin.reflect;
+    opens kotlin.ranges to kotlin.reflect;
+    opens kotlin.reflect to kotlin.reflect;
+}