Add 💥 (😢 → 55, 😀 → 5107) in swift::TypeChecker::configureInterfaceType(…)

Add test case for crash triggered in `swift::TypeChecker::configureInterfaceType(…)`.

Assertion failure in [`lib/AST/Parameter.cpp (line 154)`](https://github.com/apple/swift/blob/master/lib/AST/Parameter.cpp#L154):

```
Assertion `!type->hasArchetype()' failed.

When executing: swift::Type swift::ParameterList::getInterfaceType(swift::DeclContext *) const
```

<details>
<summary>Assertion context:</summary>
```
/// containing contextual types.
Type ParameterList::getInterfaceType(DeclContext *DC) const {
  auto &C = DC->getASTContext();

  if (size() == 0)
    return TupleType::getEmpty(C);

  SmallVector<TupleTypeElt, 8> argumentInfo;

  for (auto P : *this) {
    assert(P->hasType());

    Type type;
    if (P->hasInterfaceType())
      type = P->getInterfaceType();
    else if (!P->getTypeLoc().hasLocation())
      type = ArchetypeBuilder::mapTypeOutOfContext(DC, P->getType());
    else
      type = P->getType();
    assert(!type->hasArchetype());
```
</details>
<details>
<summary>Stack trace:</summary>
```
swift: /path/to/swift/lib/AST/Parameter.cpp:154: swift::Type swift::ParameterList::getInterfaceType(swift::DeclContext *) const: Assertion `!type->hasArchetype()' failed.
9  swift           0x0000000000eea501 swift::TypeChecker::configureInterfaceType(swift::AbstractFunctionDecl*) + 625
10 swift           0x0000000000ee9d31 swift::TypeChecker::validateGenericFuncSignature(swift::AbstractFunctionDecl*) + 929
13 swift           0x0000000000eb1686 swift::TypeChecker::typeCheckDecl(swift::Decl*, bool) + 150
14 swift           0x0000000000f3191b swift::createImplicitConstructor(swift::TypeChecker&, swift::NominalTypeDecl*, swift::ImplicitConstructorKind) + 1371
15 swift           0x0000000000eb7290 swift::TypeChecker::addImplicitConstructors(swift::NominalTypeDecl*) + 1536
18 swift           0x0000000000eb1686 swift::TypeChecker::typeCheckDecl(swift::Decl*, bool) + 150
21 swift           0x0000000000f17bca swift::TypeChecker::typeCheckFunctionBodyUntil(swift::FuncDecl*, swift::SourceLoc) + 346
22 swift           0x0000000000f17a2e swift::TypeChecker::typeCheckAbstractFunctionBodyUntil(swift::AbstractFunctionDecl*, swift::SourceLoc) + 46
23 swift           0x0000000000f185f3 swift::TypeChecker::typeCheckAbstractFunctionBody(swift::AbstractFunctionDecl*) + 179
25 swift           0x0000000000ed38e1 swift::performTypeChecking(swift::SourceFile&, swift::TopLevelContext&, swift::OptionSet<swift::TypeCheckingFlags, unsigned int>, unsigned int, unsigned int) + 1281
26 swift           0x0000000000c60b89 swift::CompilerInstance::performSema() + 3289
28 swift           0x00000000007d8429 swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*, swift::FrontendObserver*) + 2857
29 swift           0x00000000007a4458 main + 2872
Stack dump:
0.	Program arguments: /path/to/swift/bin/swift -frontend -c -primary-file validation-test/compiler_crashers/28352-swift-typechecker-configureinterfacetype.swift -target x86_64-unknown-linux-gnu -disable-objc-interop -module-name main -o /tmp/28352-swift-typechecker-configureinterfacetype-226407.o
1.	While type-checking 'a' at validation-test/compiler_crashers/28352-swift-typechecker-configureinterfacetype.swift:10:28
2.	While type-checking 'A' at validation-test/compiler_crashers/28352-swift-typechecker-configureinterfacetype.swift:10:35
3.	While type-checking 'init' at validation-test/compiler_crashers/28352-swift-typechecker-configureinterfacetype.swift:10:42
<unknown>:0: error: unable to execute command: Aborted
<unknown>:0: error: compile command failed due to signal (use -v to see invocation)
```
</details>

Author: practicalswift

validation-test/compiler_crashers/28352-swift-typechecker-configureinterfacetype.swift

@@ -0,0 +1,10 @@
+// This source file is part of the Swift.org open source project
+// Copyright (c) 2014 - 2016 Apple Inc. and the Swift project authors
+// Licensed under Apache License v2.0 with Runtime Library Exception
+//
+// See http://swift.org/LICENSE.txt for license information
+// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+
+// RUN: not --crash %target-swift-frontend %s -parse
+// REQUIRES: asserts
+extension RawRepresentable{func a{struct A{let e:A.B)typealias B<T>:T