[PL][tests] Keep PL test data under "testData/klib/" dir

compiler/testData/klib/partial-linkage/noNonImplementedCallableFalsePositives/lib/l.kt

@@ -0,0 +1,21 @@
+package lib
+
+interface I {
+    fun f(): Int
+    val p1: Int
+    val p2: Int
+}
+
+interface I2: I {
+    fun compute() = f() * p1 * p2
+}
+
+abstract class AC : I2 {
+    override fun f() = 42
+    override val p1 get() = 2
+    override val p2 get() = -1
+}
+
+// All callables are correctly implemented in class C.
+// Need to check that no false positives of "non-implemented" callables are detected for this case.
+class C : I, AC()

compiler/testData/klib/partial-linkage/noNonImplementedCallableFalsePositives/lib/module.info

@@ -0,0 +1,2 @@
+STEP 0:
+    dependencies: stdlib