Incorporate rmustacc's review feedback.

*** 31,40 ****
--- 31,41 ----
  dir path=opt/libc-tests/tests/symbols
  file path=opt/libc-tests/README mode=0444
  file path=opt/libc-tests/bin/libctest mode=0555
  file path=opt/libc-tests/cfg/README mode=0444
  file path=opt/libc-tests/cfg/compilation.cfg mode=0444
+ file path=opt/libc-tests/cfg/symbols/README mode=0444
  file path=opt/libc-tests/cfg/symbols/ctype_h.cfg mode=0444
  file path=opt/libc-tests/cfg/symbols/dirent_h.cfg mode=0444
  file path=opt/libc-tests/cfg/symbols/fcntl_h.cfg mode=0444
  file path=opt/libc-tests/cfg/symbols/locale_h.cfg mode=0444
  file path=opt/libc-tests/cfg/symbols/math_h.cfg mode=0444