add space after comma
add space after equal
add comments in vio_close_shared_memory()


include/violite.h:
  fix indentation
sql-common/client.c:
  fix identation
sql/mysqld.cc:
  add space after comma
vio/vio.c:
  add space after equal
  fix identation
vio/viosocket.c:
  add space after comma
  add comments in vio_close_shared_memory()