Moved stdlib to a seperate folder and added some more headers that are required for compiling libgcc (no implementation yet).

targets/_any/stdlib/include/assert.h

@@ -0,0 +1,27 @@
+
+#pragma once
+
+#if !defined(BAD_APPLE_OS_ASSERT_H_INCLUDED)
+#define BAD_APPLE_OS_ASSERT_H_INCLUDED
+
+#include "./detail/common.h"
+
+BA_EXTERN_C_BEGIN
+
+#if defined(NDEBUG)
+#define assert(condition) ((void) 0)
+#else
+#define assert(condition) \
+if (!(condition)) \
+{ \
+    __ba__assert_fail(__FILE__, __LINE__, #condition); \
+}
+#endif
+
+#if !defined(NDEBUG)
+BA_CXX_NORETURN void __ba__assert_fail(const char* filename, int line, const char* condition) BA_CXX_NOEXCEPT;
+#endif
+
+BA_EXTERN_C_END
+
+#endif // !defined(BAD_APPLE_OS_ASSERT_H_INCLUDED)