Introduce TypeConstructorSubstitution.create

After latest changes type constructors of inner classes contains
additional type parameters that are copies of ones from outer class.

Their indices are correct, but they used only for subtyping check,
all entries within inner classes are still refers to original
descriptors having different indices.

Example:
class Outer<E> {
   inner class Inner<F> { // Inner's type constructor looks like Inner<F, E>
      fun foo(): E // refers to E in outer having index 0
   }
}

Indexed substitution does not work here because of intersecting indices,
so we replace it with common map substituion in such cases.

idea/idea-completion/src/org/jetbrains/kotlin/idea/completion/HeuristicSignatures.kt

@@ -31,10 +31,7 @@ import org.jetbrains.kotlin.resolve.TypeResolver
 import org.jetbrains.kotlin.resolve.scopes.LexicalScope
 import org.jetbrains.kotlin.resolve.scopes.LexicalScopeImpl
 import org.jetbrains.kotlin.resolve.scopes.utils.memberScopeAsImportingScope
-import org.jetbrains.kotlin.types.IndexedParametersSubstitution
-import org.jetbrains.kotlin.types.KotlinType
-import org.jetbrains.kotlin.types.SubstitutionUtils
-import org.jetbrains.kotlin.types.Variance
+import org.jetbrains.kotlin.types.*
 import java.util.*
 
 public class HeuristicSignatures(
@@ -70,7 +67,7 @@ public class HeuristicSignatures(
 
             val type = typeFromText(typeStr, typeParameters)
 
-            val substitutor = IndexedParametersSubstitution(ownerClass.typeConstructor, ownerType.arguments).buildSubstitutor()
+            val substitutor = TypeConstructorSubstitution.create(ownerClass.typeConstructor, ownerType.arguments).buildSubstitutor()
             return substitutor.substitute(type, Variance.INVARIANT)
         }
     }