Build: Add kotlin.build.dependencies.iu.enabled property

Alias for intellijUltimateEnabled

dependencies/kotlin-build-gradle-plugin/build.gradle.kts

@@ -4,7 +4,7 @@ plugins {
 }
 
 group = "org.jetbrains.kotlin"
-version = "0.0.18"
+version = "0.0.19"
 
 repositories {
     mavenCentral()

dependencies/kotlin-build-gradle-plugin/src/BuildProperties.kt

@@ -66,8 +66,8 @@ class KotlinBuildProperties(
 
     val isTeamcityBuild: Boolean = getBoolean("teamcity") || System.getenv("TEAMCITY_VERSION") != null
 
-    val intellijUltimateEnabled: Boolean
-        get() = getBoolean("intellijUltimateEnabled", isTeamcityBuild)
+    val intellijUltimateEnabled: Boolean = getBoolean("intellijUltimateEnabled", isTeamcityBuild) ||
+            getBoolean("kotlin.build.dependencies.iu.enabled", isTeamcityBuild)
 
     val includeCidrPlugins: Boolean = kotlinUltimateExists && getBoolean("cidrPluginsEnabled")