Replace __ANDROID__ with __BIONIC__.

Summary:
None of these checks are specific to Android devices. If libc++ was
used with Bionic on a normal Linux system these checks would still be
needed.

Reviewers: mclow.lists, EricWF

Subscribers: compnerd, tberghammer, danalbert, srhines, cfe-commits

Differential Revision: https://reviews.llvm.org/D24690

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@281921 91177308-0d34-0410-b5e6-96231b3b80d8

src/locale.cpp

@@ -28,7 +28,7 @@
 #include "__sso_allocator"
 #if defined(_LIBCPP_MSVCRT) || defined(__MINGW32__)
 #include "support/win32/locale_win32.h"
-#elif !defined(__ANDROID__)
+#elif !defined(__BIONIC__)
 #include <langinfo.h>
 #endif
 #include <stdlib.h>