use portable method, getting milliseconds between calls - Linux would
let us do funky stuff by getting the timeout from select(2). Everywhere
else sucks and doesn't let us do that :(

Index: ndb-work/storage/ndb/include/util/InputStream.hpp
===================================================================


storage/ndb/include/util/InputStream.hpp:
  WL#3704 mgmapi timeouts: Change to have total timeout for call, not per request
storage/ndb/include/util/OutputStream.hpp:
  WL#3704 mgmapi timeouts: Change to have total timeout for call, not per request
storage/ndb/include/util/socket_io.h:
  WL#3704 mgmapi timeouts: Change to have total timeout for call, not per request
storage/ndb/src/common/util/InputStream.cpp:
  WL#3704 mgmapi timeouts: Change to have total timeout for call, not per request
storage/ndb/src/common/util/OutputStream.cpp:
  WL#3704 mgmapi timeouts: Change to have total timeout for call, not per request
storage/ndb/src/common/util/socket_io.cpp:
  WL#3704 mgmapi timeouts: Change to have total timeout for call, not per request
storage/ndb/src/mgmsrv/Services.cpp:
  WL#3704 mgmapi timeouts: Change to have total timeout for call, not per request