Move win32 specific files to win32 dir

CMakeLists.txt

@@ -323,9 +323,9 @@ set(LIB_PLATFORM_SRC
 # c++17 compat code
   ${CXX_COMPAT_SRC}
 # win32 inline code
-  llarp/win32_inet.c
-  llarp/win32_intrnl.c
-  llarp/win32_upoll.c
+  llarp/win32/win32_inet.c
+  llarp/win32/win32_intrnl.c
+  llarp/win32/win32_upoll.c
 )
 
 set(NTRU_AVX_SRC

llarp/ev/ev.hpp

@@ -17,8 +17,8 @@
 #include <unistd.h>
 
 #ifdef _WIN32
-#include <win32_up.h>
-#include <win32_upoll.h>
+#include <win32/win32_up.h>
+#include <win32/win32_upoll.h>
 // From the preview SDK, should take a look at that
 // periodically in case its definition changes
 #define UNIX_PATH_MAX 108