[android] Update tests to use new Android overlay and disable stdlib/Glibc.swift

Author: finagolfin

validation-test/StdlibUnittest/ChildProcessShutdown/FailIfChildCrashesDuringShutdown.swift

@@ -10,6 +10,8 @@ import StdlibUnittest
   import Glibc
 #elseif os(Windows)
   import MSVCRT
+#elseif canImport(Android)
+  import Android
 #else
 #error("Unsupported platform")
 #endif

validation-test/StdlibUnittest/ChildProcessShutdown/FailIfChildExitsDuringShutdown.swift

@@ -8,6 +8,8 @@ import StdlibUnittest
   import Glibc
 #elseif os(Windows)
   import MSVCRT
+#elseif canImport(Android)
+  import Android
 #else
 #error("Unsupported platform")
 #endif

validation-test/StdlibUnittest/ChildProcessShutdown/PassIfChildCrashedDuringTestExecution.swift

@@ -8,6 +8,8 @@ import StdlibUnittest
   import Glibc
 #elseif os(Windows)
   import MSVCRT
+#elseif canImport(Android)
+  import Android
 #else
 #error("Unsupported platform")
 #endif

validation-test/StdlibUnittest/ChildProcessShutdown/RequireOwnProcess.swift

@@ -8,6 +8,8 @@ import StdlibUnittest
   import Glibc
 #elseif os(Windows)
   import MSVCRT
+#elseif canImport(Android)
+  import Android
 #else
 #error("Unsupported platform")
 #endif

validation-test/StdlibUnittest/Stdin.swift

@@ -10,6 +10,8 @@ import StdlibUnittest
   import Glibc
 #elseif os(Windows)
   import MSVCRT
+#elseif canImport(Android)
+  import Android
 #else
 #error("Unsupported platform")
 #endif

validation-test/stdlib/Glibc.swift

@@ -6,7 +6,7 @@
 // UNSUPPORTED: OS=tvos
 // UNSUPPORTED: OS=watchos
 
-// REQUIRES: OS=linux-gnu || OS=linux-androideabi || OS=linux-android
+// REQUIRES: OS=linux-gnu
 
 import Swift
 import StdlibUnittest

validation-test/stdlib/POSIXErrorCode.swift

@@ -10,6 +10,8 @@ import StdlibUnittest
   import Darwin
 #elseif canImport(Glibc)
   import Glibc
+#elseif canImport(Android)
+  import Android
 #else
 #error("Unsupported platform")
 #endif

validation-test/stdlib/String.swift

@@ -1235,6 +1235,8 @@ StringTests.test("Conversions") {
 
 #if canImport(Glibc)
   import Glibc
+#elseif canImport(Android)
+  import Android
 #endif
 
 StringTests.test("lowercased()") {