added 4 new public API functions to def file

build/msvc/portaudio.def

diff --git a/build/msvc/portaudio.def b/build/msvc/portaudio.def
index bdaa8ee..c1361a8 100644
--- a/build/msvc/portaudio.def
+++ b/build/msvc/portaudio.def
@@ -35,6 +35,10 @@
 Pa_GetStreamWriteAvailable          @32
 Pa_GetSampleSize                    @33
 Pa_Sleep                            @34
+Pa_GetAvailableHostApisCount        @35
+Pa_GetAvailableHostApis             @36
+Pa_SelectHostApis                   @37
+Pa_GetSelectedHostApis              @38
 PaAsio_GetAvailableBufferSizes      @50
 PaAsio_ShowControlPanel             @51
 PaUtil_InitializeX86PlainConverters @52