vm: include ubpf_jit.o in dynamic library

[yoursunny]

When #97 and #48 were merged at the same time, certain symbols are included in libubpf.a but not in libubpf.so.
That causes linker errors such as:

libndn-dpdk-c.a.p/csrc_strategycode_load.c.o: In function `StrategyCode_LoadUbpf':
build/../csrc/strategycode/load.c:40: undefined reference to `ubpf_compile'

This PR makes both static library and dynamic library include the same object files.