Re: [libvirt] [PATCH] build: always include libvirt_lxc.syms in tarball

On a mingw build, 'make distcheck' fails with: GEN libvirt_qemu.def make[3]: *** No rule to make target `../../src/libvirt_lxc.syms', needed by `libvirt_lxc.def'. Stop. I traced it to a missing entry in EXTRA_DIST. But rather than keep the entire list in sync, it is easier to list the three syms files that drive .so files directly, and then reuse existing makefile variables for the remaining files (that is, I validated that all remaining files are added to SYM_FILES, possibly via USED_SYM_FILES, according to makefile conditionals).