message: Modified Makefile to ignore compiled file in submodule pb
diff: @@ -237,7 +237,7 @@ $(BLACKWIDOW):
  $(AM_V_at)make -C $(BLACKWIDOW_PATH) ROCKSDB_PATH=$(ROCKSDB_PATH) SLASH_PATH=$(SLASH_PATH) DEBUG_LEVEL=$(DEBUG_LEVEL)
  $(PROTOBUF) $(PROTOC):
  - cd $(PROTOBUF_PATH); autoreconf -if; ./configure --prefix=$(PROTOBUF_PATH)/_install --disable-shared; make install
  + cd $(PROTOBUF_PATH); autoreconf -if; ./configure --prefix=$(PROTOBUF_PATH)/_install --disable-shared; make install; echo '*' > $(PROTOBUF_PATH)/.gitignore
  $(GLOG):
  cd $(THIRD_PATH)/glog; if [ ! -f ./Makefile ]; then ./configure --disable-shared; fi; make; echo '*' > $(CURDIR)/third/glog/.gitignore;
  