Fixed buffering issues.

- Replace all printf(...) and puts(...) calls to dprintf(STDOUT_FILENO).
- Replace all fflush(stdout) calls to fsync(STDOUT_FILENO).
- Added duration reporters on for_each functions.

Change-Id: If14b4d14ffc23bfead2ca8ad23b7b3027de01156
Fixes: 33128765
Test: manual verification
Test: dumpstate_test passes