Bug #771597 - This appears to be only for Windows hosts, which
return a full string identifier (eg New Zealand Standard Time)
where others return +1200.

Also, modified the format string to have better compatibility
with more hosts for hour:minute:second formatting.

Change-Id: I979f2b6f1d5e0d08ac3aa6dec05036b718bb8ee1
Signed-off-by: Darryl Hamilton <darrylh@catalyst.net.nz>