Change linux Makefile to reference updated hid library

Makefile-manual in hidapi/linux referenced hid.o in its current directory instead of hid.o in ../hidtest/hid.o. The former object file comes from an older version of the hid api, which returns the wrong device path in some linux distributions.

I've changed the Makefile-manual file to make it similar to hidapi/testgui/Makefile-manual.