[mpp_thread]: fix compile error on windows and linux

git-svn-id: https://10.10.10.66:8443/svn/MediaProcessPlatform/trunk/mpp@774 6e48237b-75ef-9749-8fc9-41990f28c85a

osal/inc/mpp_thread.h

@@ -34,6 +34,11 @@
 #include "pthread.h"
 #pragma comment(lib, "pthreadVC2.lib")
 
+/*
+ * add pthread_setname_np for windows
+ */
+int pthread_setname_np(pthread_t thread, const char *name);
+
 #else
 
 #include <unistd.h>