message: Fixed issues on linking against linunwind and removed maybe-non-existing option of Git command
diff: @@ -74,7 +74,7 @@ find_package(Git)
  if (GIT_FOUND AND EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/.git")
  execute_process(
  COMMAND
  - ${GIT_EXECUTABLE} -C ${CMAKE_CURRENT_SOURCE_DIR} rev-parse --short HEAD
  + ${GIT_EXECUTABLE} rev-parse --short HEAD
  OUTPUT_VARIABLE GIT_INFO_SHA
  )
  endif()
  @@ -304,8 +304,8 @@ macro(nebula_link_libraries target)
  ${OPENSSL_CRYPTO_LIBRARY}
  ${KRB5_LIBRARIES}
  ${COMPRESSION_LIBRARIES}
  - ${LIBUNWIND_LIBRARIES}
  ${JEMALLOC_LIB}
  + ${LIBUNWIND_LIBRARIES}
  dl
  ${GETTIME_LIB}
  -pthread
  