stub monitor implementation.

This removes monitor.c and replaces it with a smaller monitor-android.c
which implements only the minimum stubs required for the Android emulator
(really snapshot support).

NOTE: After this change, the 'monitor' command in the Android console
      will always return with a KO.

Change-Id: I8b631b017d7418cbc3fd3ba36e55147ce2630459
9 files changed