(CONTRIBUTION)

Issue:
------
MTR tests written to test GIS functions fail with a result content mismatch
on some platforms due to difference in precision. These have been corrected
using the mysqltest function --replace_regex till now.
This requires a complex regular expression to replace the result with a lower
precision.

Fix:
----
For ease of use, a new mysqltest command 'replace_numberic_round' has been
introduced to round off numeric values.
The usage is as follows:
--replace_numberic_round <precision>
where precision is the number of digits after the decimal that the result will
be rounded off to. The precision can be any number between 0 to 16.

Patch contributed by: Daniel Black
Reviewed-by: Pavan Naik <pavan.naik@oracle.com>
Reviewed-by: Srikanth BR <srikanth.b.r@oracle.com>
RB: 14633