Sync JUCE with DISTRHO, move mingw-std-threads into modules/

Signed-off-by: falkTX <falktx@falktx.com>

source/modules/juce_audio_processors/format_types/juce_VSTPluginFormat.cpp

@@ -56,9 +56,6 @@ JUCE_BEGIN_IGNORE_WARNINGS_MSVC (4355)
  #ifndef WM_APPCOMMAND
   #define WM_APPCOMMAND 0x0319
  #endif
-
- extern "C" void _fpreset();
- extern "C" void _clearfp();
 #elif ! JUCE_WINDOWS
  static void _fpreset() {}
  static void _clearfp() {}

source/modules/juce_core/threads/juce_WaitableEvent.h

@@ -21,7 +21,7 @@
 */
 
 #if JUCE_MINGW
-#include "../../hylia/mingw-std-threads/mingw.condition_variable.h"
+#include "mingw-std-threads/mingw.condition_variable.h"
 #endif
 
 namespace juce