Only install bin on windows for .dll files.

Core/Contents/CMakeLists.txt

@@ -245,7 +245,9 @@ IF(POLYCODE_INSTALL_PLAYER)
 #    IF(POLYCODE_BUILD_SHARED)
 #        INSTALL(TARGETS Polycore_dynamic DESTINATION ${POLYCODE_RELEASE_DIR}/Player)
 #    END(POLYCODE_BUILD_SHARED)
-    
-    INSTALL(DIRECTORY ${POLYCODE_RELEASE_DIR}/Framework/Core/Dependencies/bin/ 
-        DESTINATION ${POLYCODE_RELEASE_DIR}/Player)
+
+    IF(MSVC)    
+        INSTALL(DIRECTORY ${POLYCODE_RELEASE_DIR}/Framework/Core/Dependencies/bin/ 
+            DESTINATION ${POLYCODE_RELEASE_DIR}/Player)
+    ENDIF(MSVC)
 ENDIF(POLYCODE_INSTALL_PLAYER)