[gradle-plugin] Fix version according to the new versioning system

tools/kotlin-native-gradle-plugin/build.gradle

@@ -42,7 +42,23 @@ apply plugin: 'com.jfrog.bintray'
 apply plugin: 'com.github.johnrengelman.shadow'
 
 group = 'org.jetbrains.kotlin'
-version = konanVersion
+
+// Gradle doesn't allow using the KonanVersion class defined in `shared` from this build.
+// TODO: Investigate if we can workaround this issue in better way.
+def metaVersion = project.findProperty("konanMetaVersion")?.toString()?.toLowerCase() ?: "dev"
+switch (metaVersion) {
+    case "dev":
+        // Use a full build number (e.g. 0.7-dev-123) for dev builds to distinguish them.
+        version = project.findProperty("build.number")?.toString() ?: konanVersion
+        break
+    case "rel":
+        // Use the version specified for the project (e.g. 0.7) in case of release builds.
+        version = konanVersion
+        break
+    default:
+        // Just append the meta-version in other cases, e.g. 0.7-rc1, 0.7-beta
+        version = "$konanVersion-$metaVersion"
+}
 
 repositories {
     mavenCentral()
@@ -161,11 +177,11 @@ bintray {
         licenses = ['Apache-2.0']
         vcsUrl = 'https://github.com/JetBrains/kotlin-native'
         version {
-            name = konanVersion
+            name = project.version
             desc = "Kotlin Native Gradle plugin $konanVersion"
         }
-        publish = true // project.hasProperty("publish")
-        override = project.hasProperty("override")
+        publish  = project.hasProperty("bintrayPublish")
+        override = project.hasProperty("bintrayOverride")
     }
     publications = ['gradlePlugin']
 }