Code base to fix the print errors in UST (v4)

Code base to fix the print errors in UST (v4)

Update:
v2: Use commit_seq instead of commit_count to fix a consumerd segfault when
    accessing commit_count, since it is not mapped.
v3: Remove commented out code
v4: Remove unused variable

Signed-off-by: Yannick Brosseau <yannick.brosseau@gmail.com>
Signed-off-by: David Goulet <david.goulet@polymtl.ca>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>