Rename old crash cases to match the current naming scheme.

Will allow for easy import of crash cases from swift-compiler-crashes.

validation-test/compiler_crashers_fixed/01676-swift-parser-parseexprsequence.swift

@@ -0,0 +1,28 @@
+// RUN: not %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+ject {
+typealias e = b: A {
+return x {
+}
+typealias e {
+}
+class c, V>) -> {
+}
+}
+get {
+}
+var e(f(start, (T) {
+assert() {
+}
+func e<T: b : A>: T where d() {
+return [c: T> String {
+}
+}
+}
+switch x }
+private class A {
+func b<j : b> Any] {