libdispatch-fix-atomic.patch

Fix various errors when importing stdatomic.h.

This was brought up in the following NDK issues, but is still not working correctly with NDK r22 within extern "C" and with the custom atomic macros in libdispatch:
https://github.com/android/ndk/issues/1177
https://github.com/android/ndk/issues/1178

diff --git a/src/shims/atomic.h b/src/shims/atomic.h
index bc232f1..d2e6921 100644
--- a/src/shims/atomic.h
+++ b/src/shims/atomic.h
@@ -35,7 +35,7 @@
 #if defined(__cplusplus)
 #define _Bool bool
 #endif
-#if defined(__ANDROID__) && __NDK_MAJOR__ >= 23
+#if defined(__ANDROID__) && __has_include(<bits/stdatomic.h>)
 #include <bits/stdatomic.h>
 #else
 #include <stdatomic.h>