[K/N][build] Split stdlib and endorsed libraries build and caching

Due to the usage of dist as an input and output at the same time by
different tasks Gradle issued warning about Execution optimizations
turning off. The fix is to split inputs and outputs in the build and
cache tasks of stdlib and endorsed libs.

kotlin-native/platformLibs/build.gradle

@@ -58,8 +58,9 @@ rootProject.project("kotlin-native").ext.platformManager.enabled.each { target -
     if (target in cacheableTargets) {
         tasks.register("${targetName}StdlibCache", KonanCacheTask) {
             it.target = targetName
-            it.originalKlib = file("$konanHome/klib/common/stdlib")
-            it.cacheRoot = file("$konanHome/klib/cache")
+            def runtimeBuild = project(":kotlin-native:runtime").buildDir
+            it.originalKlib = project.file("$runtimeBuild/${target}Stdlib")
+            it.cacheRoot = project.file("$runtimeBuild/cache/$target").path
 
             it.dependsOn ":kotlin-native:${targetName}CrossDistRuntime"
         }