* #39226: Switch back to pjsip rev 4710

Rev 4716 introduces errors when building for android (miltiple definitions)
diff --git a/jni/pjproject-android/pjsip/build/Makefile b/jni/pjproject-android/pjsip/build/Makefile
index eeafad3..6b4cd57 100644
--- a/jni/pjproject-android/pjsip/build/Makefile
+++ b/jni/pjproject-android/pjsip/build/Makefile
@@ -151,7 +151,7 @@
 			   main.o
 export PJSUA2_TEST_CFLAGS += $(_CFLAGS) $(PJ_VIDEO_CFLAGS)
 export PJSUA2_TEST_CXXFLAGS = $(PJSUA2_LIB_CFLAGS) 
-export PJSUA2_TEST_LDFLAGS += $(PJ_LDXXFLAGS) $(PJ_LDXXLIBS) $(LDFLAGS)
+export PJSUA2_TEST_LDFLAGS += -lpjsua2-$(TARGET_NAME) -lstdc++ $(PJ_LDFLAGS) $(PJ_LDLIBS) $(LDFLAGS)
 export PJSUA2_TEST_EXE := pjsua2-test-$(TARGET_NAME)$(HOST_EXE)
 
 export CC_OUT CC AR RANLIB HOST_MV HOST_RM HOST_RMDIR HOST_MKDIR OBJEXT LD LDOUT