Implement --purge_user_libs konanc and cinterop flag

backend.native/cli.bc/src/org/jetbrains/kotlin/cli/bc/K2Native.kt

@@ -120,6 +120,8 @@ class K2Native : CLICompiler<K2NativeCompilerArguments>() {
                 put(PRINT_LOCATIONS, arguments.printLocations)
                 put(PRINT_BITCODE, arguments.printBitCode)
 
+                put(PURGE_USER_LIBS, arguments.purgeUserLibs)
+
                 put(VERIFY_IR, arguments.verifyIr)
                 put(VERIFY_DESCRIPTORS, arguments.verifyDescriptors)
                 put(VERIFY_BITCODE, arguments.verifyBitCode)

backend.native/cli.bc/src/org/jetbrains/kotlin/cli/bc/K2NativeCompilerArguments.kt

@@ -121,6 +121,9 @@ class K2NativeCompilerArguments : CommonCompilerArguments() {
     @Argument(value = "--print_locations", description = "Print locations")
     var printLocations: Boolean = false
 
+    @Argument(value = "--purge_user_libs", description = "Don't link unused libraries even explicitly specified")
+    var purgeUserLibs: Boolean = false
+
     @Argument(value = "--time", description = "Report execution time for compiler phases")
     var timePhases: Boolean = false