[K/N][tests] Added test for @ character in library name

kotlin-native/backend.native/tests/build.gradle

@@ -2428,6 +2428,12 @@ linkTest("no_purge_for_dependencies") {
     UtilsKt.dependsOnPlatformLibs(it)
 }
 
+linkTest("lib@name") {
+    useGoldenData = true
+    source = "link/klib_name/prog.kt"
+    lib = "link/klib_name/lib.kt"
+}
+
 task for0(type: KonanLocalTest) {
     useGoldenData = true
     source = "runtime/basic/for0.kt"

kotlin-native/backend.native/tests/link/klib_name/lib.kt

@@ -0,0 +1,8 @@
+/*
+ * Copyright 2010-2021 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the LICENSE file.
+ */
+
+fun foo() {
+    println("linked library")
+}

kotlin-native/backend.native/tests/link/klib_name/prog.kt

@@ -0,0 +1,9 @@
+/*
+ * Copyright 2010-2021 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the LICENSE file.
+ */
+
+
+fun main(args: Array<String>) {
+    foo()
+}

kotlin-native/backend.native/tests/link/klib_name/prog.out

@@ -0,0 +1 @@
+linked library