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.

Interop/Indexer/build.gradle

@@ -18,10 +18,10 @@ buildscript {
     ext.rootBuildDirectory = file('../..')
 
     apply from: "$rootBuildDirectory/gradle/kotlinGradlePlugin.gradle"
+    apply from: "$rootBuildDirectory/gradle/kotlinNativeShared.gradle"
 
     dependencies {
         classpath "org.jetbrains.kotlin:kotlin-stdlib:$buildKotlinVersion"
-        classpath "org.jetbrains.kotlin:kotlin-native-shared:$konanVersion"
     }
 }
 apply plugin: 'kotlin'

Interop/Runtime/build.gradle

@@ -21,10 +21,10 @@ buildscript {
     ext.rootBuildDirectory = file('../..')
 
     apply from: "$rootBuildDirectory/gradle/kotlinGradlePlugin.gradle"
+    apply from: "$rootBuildDirectory/gradle/kotlinNativeShared.gradle"
 
     dependencies {
         classpath "org.jetbrains.kotlin:kotlin-stdlib:$buildKotlinVersion"
-        classpath "org.jetbrains.kotlin:kotlin-native-shared:$konanVersion"
     }
 }
 import org.jetbrains.kotlin.konan.target.ClangArgs

Interop/StubGenerator/build.gradle

@@ -34,7 +34,7 @@ dependencies {
     compile "org.jetbrains.kotlin:kotlin-stdlib:$buildKotlinVersion"
     compile "org.jetbrains.kotlin:kotlin-compiler:$buildKotlinVersion"
     compile project(':Interop:Indexer')
-    compile "org.jetbrains.kotlin:kotlin-native-shared:$konanVersion"
+    compile kotlinNativeSharedModule
 }
 
 compileKotlin {