Depend on kotlin-native-shared from a separate repo

Kotlin-native-shared was copied in a separate repository.
This patch removes this subproject from the K/N repo and
adds a dependency on an artifact built from this separate repo.

extracted/konan.serializer/build.gradle

@@ -33,11 +33,15 @@ repositories {
     maven {
         url buildKotlinCompilerRepo
     }
+    maven {
+        url sharedRepo
+    }
 }
 
 dependencies {
     compile "org.jetbrains.kotlin:kotlin-stdlib:$buildKotlinVersion"
-    compile "org.jetbrains.kotlin:kotlin-native-shared:$konanVersion"
+    compile "org.jetbrains.kotlin:kotlin-native-shared:$sharedVersion"
+    compile "org.jetbrains.kotlin:kotlin-native-version"
     compile "org.jetbrains.kotlin:kotlin-compiler:$kotlinVersion"
     compile "org.jetbrains.kotlin:konan.metadata:$konanVersion"
 }