Fix for RM2811

Hi,

Please find attached patch to fix RM2811

Issue was caused due to assumption made when current position in log file
while reading it reaches to last line then
we were assuming process is finished. However this is not the case.
Background process may be busy performing
some other task and logs might not be logged to file immediately. So we
should also check process exit code along
with above condition.

Apart from above this patch also includes minor fix related to status text
colour.

--
*Harshal Dhumal*
*Sr. Software Engineer*

EnterpriseDB India: http://www.enterprisedb.com
The Enterprise PostgreSQL Company