Description:
    Initialize ID variables, so they aren't invalid when attempting to close
them.

Tested on:
    Mac OSX/64 10.9.3 (amazon) w/valgrind
    (h5committest not required on this branch)
Description:
    Add code to ld_monitor test so that a keypress will stop it (instead of
ctrl-c, which was messing up valgrind).

Tested on:
    Mac OSX/64 10.9.3 (amazon) w/valgrind
    (h5committest not required on this branch)