Added suppress rule for dlclose() in valgrind.supp


mysql-test/valgrind.supp:
  Removed duplication
  Added error in dlclose() noticed on pushbuild for x86_64
storage/maria/ma_init.c:
  Moved variables to ma_static.c to avoid link error on MacOSX
storage/maria/ma_loghandler.c:
  Moved variables to ma_static.c to avoid link error on MacOSX
storage/maria/ma_static.c:
  Moved variables to ma_static.c to avoid link error on MacOSX