[K/N][caches] Support explicit stdlib passing

The cache directory for stdlib and platform libraries is selected differently as
opposed to all other libraries. This commit fixes a problem in this mechanism if
stdlib is passed explicitly (ot it would be confused with external libraries). Due to
the problem, the stdlib's cache was placed into the directory with other external
libraries caches, but the selecting cache mechanism in the compiler (in CachedLibraries.kt)
only searches for caches in this directory for external libraries (and stdlib isn't
considered external there because of its path).

 #KT-69835 Fixed

Author: homuroll

kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/CacheBuilder.kt

@@ -15,6 +15,7 @@ import org.jetbrains.kotlin.library.KotlinLibrary
 import org.jetbrains.kotlin.library.metadata.resolver.TopologicalLibraryOrder
 import org.jetbrains.kotlin.library.uniqueName
 import org.jetbrains.kotlin.config.CommonConfigurationKeys
+import org.jetbrains.kotlin.library.isNativeStdlib
 import org.jetbrains.kotlin.library.metadata.isCInteropLibrary
 import org.jetbrains.kotlin.library.unresolvedDependencies
 
@@ -83,9 +84,8 @@ class CacheBuilder(
         val externalLibrariesToCache = mutableListOf<KotlinLibrary>()
         val icedLibraries = mutableListOf<KotlinLibrary>()
 
-        val stdlib = konanConfig.distribution.stdlib
         allLibraries.forEach { library ->
-            val isSubjectOfIC = !library.isDefault && !library.isExternal && !library.libraryName.startsWith(stdlib)
+            val isSubjectOfIC = !library.isDefault && !library.isExternal && !library.isNativeStdlib
             val cache = konanConfig.cachedLibraries.getLibraryCache(library, allowIncomplete = isSubjectOfIC)
             cache?.let {
                 caches[library] = it
@@ -238,7 +238,7 @@ class CacheBuilder(
         val makePerFileCache = !isExternal && !library.isCInteropLibrary()
 
         val libraryCacheDirectory = when {
-            library.isDefault -> konanConfig.systemCacheDirectory
+            library.isDefault || library.isNativeStdlib -> konanConfig.systemCacheDirectory
             isExternal -> CachedLibraries.computeLibraryCacheDirectory(
                     konanConfig.autoCacheDirectory, library, uniqueNameToLibrary, uniqueNameToHash)
             else -> konanConfig.incrementalCacheDirectory!!