message: Find Spglib under different name
  I'm not entirely sure where the only listed name cmake searches for
  originates from, but vanilla upstream only installs a libsymspg.
diff: # SPGLIB_LIBRARY - The Spglib library
  #
  find_path(SPGLIB_INCLUDE_DIR spglib/spglib.h)
  -find_library(SPGLIB_LIBRARY NAMES spglib)
  +find_library(SPGLIB_LIBRARY NAMES spglib symspg)
  set(SPGLIB_INCLUDE_DIRS "${SPGLIB_INCLUDE_DIR}")
  