build scripts: added method to build unpacked distribution

build/groovy/org/jetbrains/intellij/build/BuildTasks.groovy

@@ -72,6 +72,8 @@ abstract class BuildTasks {
 
   abstract void buildUpdaterJar()
 
+  abstract void buildUnpackedDistribution(String targetDirectory)
+
   static BuildTasks create(BuildContext context) {
     return new BuildTasksImpl(context)
   }

build/groovy/org/jetbrains/intellij/build/impl/BuildTasksImpl.groovy

@@ -271,6 +271,7 @@ idea.fatal.error.notification=disabled
     compileModules(buildContext.productProperties.productLayout.includedPluginModules + distributionJARsBuilder.platformModules)
     buildContext.messages.block("Build platform and plugin JARs") {
       distributionJARsBuilder.buildJARs()
+      distributionJARsBuilder.buildAdditionalArtifacts()
     }
     if (buildContext.productProperties.scrambleMainJar) {
       if (buildContext.proprietaryBuildTools.scrambleTool != null) {
@@ -448,6 +449,35 @@ idea.fatal.error.notification=disabled
     }
   }
 
+  @Override
+  void buildUnpackedDistribution(String targetDirectory) {
+    def jarsBuilder = new DistributionJARsBuilder(buildContext)
+    jarsBuilder.buildJARs()
+/*
+    //todo[nik] uncomment this to update os-specific files (e.g. in 'bin' directory) as well
+    layoutShared()
+    def propertiesFile = patchIdeaPropertiesFile()
+    OsSpecificDistributionBuilder builder;
+    if (SystemInfo.isWindows) {
+      builder = new WindowsDistributionBuilder(buildContext, buildContext.windowsDistributionCustomizer, propertiesFile)
+    }
+    else if (SystemInfo.isLinux) {
+      builder = new LinuxDistributionBuilder(buildContext, buildContext.linuxDistributionCustomizer, propertiesFile)
+    }
+    else if (SystemInfo.isMac) {
+      builder = new MacDistributionBuilder(buildContext, buildContext.macDistributionCustomizer, propertiesFile)
+    }
+    else {
+      buildContext.messages.error("Update from source isn't supported for '$SystemInfo.OS_NAME'")
+      return
+    }
+    def osSpecificDistPath = builder.copyFilesForOsDistribution()
+*/
+    buildContext.ant.copy(todir: targetDirectory) {
+      fileset(dir: buildContext.paths.distAll)
+    }
+  }
+
   private abstract static class BuildTaskRunnable<V> {
     final String taskName
 

build/groovy/org/jetbrains/intellij/build/impl/DistributionJARsBuilder.groovy

@@ -136,7 +136,9 @@ class DistributionJARsBuilder {
   void buildJARs() {
     buildLib()
     buildPlugins()
+  }
 
+  void buildAdditionalArtifacts() {
     def productProperties = buildContext.productProperties
     if (productProperties.generateLibrariesLicensesTable) {
       buildContext.messages.block("Generate table of licenses for used third-party libraries") {